Ευτυχισμένο Νέο Έτος
Tuesday, December 31, 2019
Exploring the frequency modulation of Dionne Warwick with a tape player at half speed
While listening to I save a little prayer for you - Dionne Warwick, the magnetic tape speed was reduced from 7ips to 3.5ips just for fun.
The vibrato of the great singer could be heard in detail at the end of phrases. Surprisingly the frequency deviation is about up and down a semitone from the carier note. Like an ambulance.
Is this part of the secret of a great exercised sweet voice?
Accuracy of inductance, impedance measurements on Pleiades experiments
Typically
+ or - 1mH
+ or - 1Ω
This was checked by connecting the Escort digital LCR meter to the Danbrdidge air core inductor boxes and Dunbridge resistance box. All scales were tried on all information sending, receiving
instruments and accuracy was surprisingly very good. (+ or - 5Ω or 5mH is the accuracy at larger Z or L values than usually used in Pleiadss experiments).
Equipment:
Escort LCR meter ELC-120 made in Taiwan
Dunbridge decade inductor type D13A made in Denmark
Dunbridge resistance box type DR4/ABCD made in Denmark
Shure SM59, AKG D190 microphone comparison
(Later addition: there is an error in this post.
The AKG mic used is possibly the D190ER (reporter's version), label is missing.
It has possibly an internal low cut filter, see 20Jan 2020 posts)
Signal path:
Male singing voice - mic at 2-4 in - Pleiades (130Ω,40mH) high pass - Sony TC-D5 Pro mono mode - Sennheiser HD 580 - listeners's (singer's) ear, brain
Both mics smooth.
D190 much louder.
More mid focused.
SM59 more smooth.
Fostex M80RP with various Pleiades (R,L) gentle slope high pass filters
2 Danbridge air cored inductor box type D13A connected in series anti phase in order to hum cancel
and
1 Danbridge resistance box type DR4/ABCD
were used to create a variable Pleiades (R,L) microphone filter.
The Fostex M80RP used was measured with the Escort LCR meter ECL-120 to have an ac impedance of 680Ω.
(DC should not be used as it can damage a ribbon mic)
The microphone was wrapped with very thin food wraping membrane so that singing distance of even 1in can be tried.
The difference between membrane and no membrane turns out to be subtle. Perhaps this has to do with the fact that even at the highest frequency the sound wavelength is much longer than membrane or membrane much much thiner....
(70ω,40mH) nice for 1in
((100-140)ω,60mH) nice for 3in
(140ω,40mH) nice for 3in more HF less mid
((70-170)ω,80mH) nice for 6in resembles AKG D190 with Pleiades (130ω,40mH)
((90-140)ω,100mH) nice for (10-12)in
Pleiades (R,L) filter for the AKG D130
It depends on the kind of singing.
These values were found to approach the sound of the AKG D190 connected to Pleiades filter (130ω,40mH):
(approximate values of series resistance)
(170ω,100mH)
(20ω,200mH)
Comparison between Electro-Voice RE-15 and AKG D190
The RE-15 was used with its LC filter off.
Both mics give a high output.
The EV more bass heavy.
Both mics we're connected to the Pleiades (130Ω,40mH) gentle slope low cut filter.
Signal path:
male soft singing voice at high register - mic at 3-6 in - Pleiades (130Ω,40mH) - Sony TC-D5 PRO mono mode - Sennheiser HD 580 - singer's ear, brain
The AKG D112 was also connected to the same inline filter
Very nice sound, more extended bass than D190. Has something of the naturalness of the D25.
The AKG 330BT was also connected to Pleiades (130Ω,40mH)
(All mic settings to flat)
Loud mic more HF than D190
Is the AKG D190 the most natural?
A Pleiades filter for Grundig GDM-121 Sennheiser MD-21
72Ω in series with 70mH and total connected to mic's output sounded very nice.
Otherwise mic is bass heavy for male singing voice.
Very high output mic.
Very extended treble.
The AKG D190 with Pleiades (130Ω,40mH) sounds more mid focused and perhaps more natural.
Pleiades ((R,L) filter for closer mic distance
For example (50Ω,40mH) or (50Ω,30mH) instead of (130Ω,40mH) for a mic distance of 2-3 in if an AKG D190 is used.
This was found while adjusting the Dunbridge inductor boxes and resistor box.
AKG D25 vs AKG D190 vs Shure Unidyne III 545 with Pleiades (130Ω,40mH) gentle slope high pass filter
The AKG D25 was used with its low cut full on
Signal path:
Male singing voice from low to high pitch - microphone at 2-6 in - Pleiades (130Ω,40mH) - Sony TC-D5 Pro mono mode (listening as usual in real time through HD 580 headphones - Sennheiser HD 580
Microphones sound bass, mid heavy without the Pleiades filter.
AKG D190
Sounded most loud of all
Smooth
AKG D25
Less loud
Even smoother midrange
That amazing oomph at low registers but without bass heaviness
Shure Unidyne III
less loud then D25
High frequency emphasis giving some perhaps coldness
Paso M8 microphone with Pleiades L cascaded to Pleiades (R,L) filters
Difficult mic. It had been modified by removing the series low cut capacitor used on its switch and an inductor wound in Magnetec nanoperm toroid was substituted.
Today it was retried adding external a Pleiades (130Ω,40mH) inline filter.
With only the in,in filter it sounds nice, warm.
With the internal Pleiades L (inductor filter) added it sounds brighter.
With only the L filter it sounds less bright.
With both filters it was directly compared to the AKG D190 with an external (130Ω,40mH) filter. The D190 sounds even better, more full and much louder.
Sennheiser MD 611 M vs AKG D190, both mics with the Pleiades (R,L) gentle slope HP (high pass) filter
Male singing tried .
Both mics sound almost unbearable without the Pleiades (130Ω,40mH) ie a 130Ω resistor in series with an inductor of 40mH and total in parallel with voice coil. The MD 611 M even more bass unbearable, unbearable room bass heaviness added and the D190 sounds mid, bass mid barking.
The particular MD611 membrane had been thoroughly cleaned a few months ago from dust metal particles. A very nice job was possible as the coil had been broken, the membrane could be removed from the magnet assembly so cleaning was extremely easy with a camel hair painting brush etc. the lucky the coil brake could be repaired by inserting the soldering iron tip to the side of the capsule almost by chance as the brake could not be seen, melted solder found its place and joined the very very thin wire. A striped wire wrap wire was implanted on top of where the coil wire coil continues at the side of the capsule to guide the solder. The extremely well cleaned membrane makes the mic sound possibly as new although there is a small hole on the side of the very thin plastic diaphragm. Later addition: if memory is correct the membrane was not removed from the magnet assembly but cleaning was nerve there's possibly by gentle abrupt artist soft natural hair paint brush strokes.
With the Pleiades (130Ω,40mH) filter the MD611 M sounds very bright and detailed. Somewhat like the quality of the When I Fall in Love - Nat King Cole world class vocal. This clearly demonstrates the detailed and focused quality that moving coil (dynamic) mics can give that some condenser mics can only perhaps dream of.
With the Pleiades (130Ω,40mH) filter the D190 sounds very natural with no bass, or treble emphasis. Barking effect disappears. No hype but detail.
With the Pleiades (20Ω,11mH) it sounds much brighter and mic can be approached to 1in.
Signal path:
male voice at various singing registers - mic at 6in or less - Pleiades (R,L) - Western Electric 1:2 step up transformer only in the case of the (20Ω,11mH) filter - Sony TC-D5 Pro in mono mode - Sennheiser HD 580 - listener's (singer) brain
Inexpensive dynamic microphones with Pleiades (R,L) filter
They sound great.
The Philips N8 207/00 with its AKG? capsule
Much variation between specimens.
The black version sounded of less bandwidth than the brown ones but perhaps closer to the neutrality of the AKG D190.
The Philips EL 1979 with its AKG? capsule great too.
Without the Pleiades filter they sound almost unbearable but with the Pleiades (130Ω,40mH) they sound world class.
Bass and mid heaviness is gone forever.
There is still some upper mid resonance on these mics but the Shure Unidyne III 545 does the same although it may sound even more focused and possibly better.
The AKG D190 sounds the most neutral and flat frequency response with the Pleiades (130Ω,40mH) gentle slope low cut or high pass filter.
All these mics give very high output on Sony TC-D5 Pro. Ironically the 545 gave the less output. This is possibly because most of these mics are 600Ω output impedance.
The AKG D190 is very high output. Amazing mic.
Monday, December 30, 2019
List of flat (even) frequency response microphones
They can sound amazing.
All that might be needed is an inductor in series with a resistor and the total resultant network connected across the mic's output. For example the Pleiades (130Ω,40mH) inline gentle slope high pass or low cut XLR female to male barrel adaptor filter. Microphones of lower impedance than 200Ω may need different values of R,L. Otherwise the sound can be even more bass, mid bass, mid heavy than typical microphones. (The proximity effect can start below 1KHz when the mic distance is a few inch small as can be seen for example on Shure catalogues back pages, SM58 for example).
Without such a filter especially at mic mouth distance of less than 24in, 12in, 6in etc most mics sound bass, mid bass, mid heavy due to proximity effect bass boost, Fletcher Munson (loud reproduction) curves bass boost, voice effort (softer singing than reproduction) curves bass boost. Directional mics exhibit in addition to the psychoacoustic effects mentioned above, the proximity effect.
Mics with rising treble response may have gained acceptance or popularity as the treble rise may be a way to cover up the bass or mid heaviness. But bass heaviness is still there chasing. Once bass heaviness is compensated the harshness of the HF rise is left exposed.
Flat frequency response microphones once bass, mid bass, mid heaviness is compensated shine through natural and detailed with no hype.
And they can approach with proper compensation the ideal of flat frequency response not from mic to loudspeaker but much more importantly from singer's vocal chords to listener's brain. [Lowe, Morgan], [Hilliard].
Here is the beginning of a small list of such world class microphones:
AKG D190
AKG D20, D25
Beyer M100, M101, M260, M81, M810, M64 Electro-Voice RE-15, RE-16 too?
Electro-Voice D054? (not tried yet) Grampian GR1, GR2
Shure SM59
Shure SM7 with its HF reduction LCR filter on
Fostex M80RP, M88RP
Sennheiser MD211 (omnidirectional)
Sennheiser MD409 (not tried yet)
Sennheiser MD441 U3 with its HF reduction LCR? filter on
The flatness of sensitivity versus frequency of these microphones can be seen or read on the respective datasheets. The human ear can recognize the sound quality of smooth.
If you know of more flat frequency response microphones you might like to add on comments.
References:
Sound Picture Recording and Reproducing Characteristcs (flat frequency response from producer's brain to listener's brain) - D. P. Lowe, K. F. Morgan - Journal of the society of motion picture engineers
A Brief History of Early Motion Picture Sound Recording and Reproducing Practice - John F. Hilliard - Journal of the society of audio engineering - vol33 - no4 - 1985 April
Shure SM59 impression
After cleaning the SM59 shines its beauty.
Foam surround had disintegrated. It was removed.
Made in USA.
First experience, fist time listening to the SM59 in the Pleiades lab.
What a microphone!
Possibly one of the best microphones ever made on earth.
The Pleiades (130Ω,40mH) inline passive gentle slope high pass filter was connected to compensate the proximity effect bass heaviness, equal loudness curves bass heaviness, voice effort curves bass heaviness. [Lowe, Morgan], [Hilliard]
(So just a 130Ω resistor in series with a 40mH inductor and total connected across mic's voice coil or output terminal.)
The sound is amazing, no coloration, no s problem, no p problems, no handling noise. Natural. Can't be described how natural in words. Like a ribbon microphone properly compensated for no bass heaviness.
No tendency for acoustic feedback showing the extremely flat frequency response of this microphone.
The neumatic suspension is a marvel of engineering virtually eliminating handling noise.
Low output. With a world class battery electron tube mic pre booster such as the Pleiades V6 there should not be any low level or hiss problem.
Signal path:
male singing voice at high register - Shure SM59 at 2-3 in - Pleiades (130Ω,40mH) filter - Sony TC-D5 Pro as preamp, mono mode - Sennheiser HD 580 monitoring headphones - Listener's (singer's) ear, brain
References:
Sound picture recording and reproducing Characteristcs (flat frequency response from producer's brain to listener's brain) - D. P. Lowe, K. F. Morgan - Jorunal of the society of motion picture engineers
A brief history of early motion picture sound recording and reproducing practice - John F. Hilliard - Journal of the society of audio engineering - vol33 - no4 - 1985 April
Who are then the music industry stars?
Who are they?
The singers?
The songwriters?
The record producers?
The recording engineers?
The microphones?
The microphone passive proximity, equal loudness or voice effort filters?
The microphone preamplifiers?
The electronic or acoustic engineers inventing or designing the equipment?
Saturday, December 28, 2019
The feet melody
Dreamed this simple melody sung by a vocalizing woman while a beat had been playing. It was a full production soundtrack to a film scene.
And wanted a hug
This is all that could be remembered. Even this would have been forgotten had Canelina the cat not waking me up as she was feeling very cold.
First note sung is B flat.
The key is bE minor.
For simplifying it will described transposed to E minor as E minor has only F sharp.
The melody will be written in a matrix of 16 16ths.
Approximately:
--b-b(oct)-g-f--g----
--b-b(oct)-g-f--bb(oct)gf---gfef (6 beats)
g-----------e---
f-------------b (repeat)
Bass number code is: [Bach,Niedt]
E
E D246 #C7
C7 A7
B45 to B
Or left hand piano notes (harmony) are:
beg
beg bdeg b#ceg
bceg aceg
be#f b#d#f
Public domain (see later addition)
Next day addition: Vicky pointed out that first few notes of melody already exist on the song Δυο μέρες μονο - Δήμητρα Γαλάνη.
Reference:
Bach bass rules - Bach, Niedt - PDF
Thursday, December 26, 2019
Protecting a microphone with a thin film outside membrane
At your risk.
While opening a damaged Gamma, German?, microphone. It is not a side address microphone but looks like an AKG D15 or Sennheiser MD4...
(Later addition: a black looking Sennheiser MD42).
Maybe I had seen one like these in a ship radio room when I was a kid.
It has the large Tuchel connector.
The front grill was unscrewed and it revealed a ring with a thin membrane which was sitting on top of the metal resonator of the voice coil diaphragm. Like a drum snare skin nano structure. Perhaps used for making the mic waterproof while the captan speaks near the bridge...
It is made of a very thin transparent material like an extremely thin mica. It makes rustling noise if it is touched.
Surprisingly it does not make much difference to the sound. It just makes it more middle focused.
It did protect the mic from everything, saliva, iron particles, dust etc.
The mic works fine.
Would a thin food wrapping membrane do the same trick on a modern mic? Or even a washed from lubricant and thoroughly dried thin condom?
How would it sound if the usual round stocking type mic pop filter is replaced by a round thin transparent film type? would it stil protect the mic?
Tuesday, December 24, 2019
The first time ever I saw your face - Peter Paul & Mary
https://m.youtube.com/watch?v=I6x3mRbZo3k
Θα μπορουςε να εχει ελληνικούς στίχους; Πχ...
Την πρωτη φορα που είδα τα ματια σου
Ειχαν την λάμψη του ονείρου
Ionian key = major key = Ιωνιος τρόπος
These names come from the Hellenic mythology.
Ιων, Δωρος.
Ion, Dorus
https://en.m.wikipedia.org/wiki/Dorus_(Deucalionid)
So we have the Ionian mode, Ιωνιος τρόπος which is the standard major 3rd key. Eg
Do Re Mi Fa Sol La Si Do (all white or natural keys).
We also have Dorian mode, Δωριος τρόπος which is a minor 3rd scale which has a change from the standard minor key towards the last notes. Below is the difference between the two.
A minor or A Aeolean, Αιωλιος
A B C D E F G A
A Dorian, A or Λα Δωριος
A B C D E #F G A
So Dorian mode is:
Tone Halftone Tone Tone Tone Halftone Tone
Thanks to Μαρω for letting me know that the names come from Hellenic mythology.
Examples of Dorian mode:
Breathe - Pink Floyd
The Great Gig in the Sky (mostly the vocal part) - Pink Floyd, Claire Tory
To Get Lucky - Duft Punk
Society's Child - Janis Ian
Sunday, December 22, 2019
Shirley Bassey
I who have, live
https://m.youtube.com/watch?v=nfDAoSDsAS4
Propellerheads, history repeating
https://m.youtube.com/watch?v=yzLT6_TQmq8
Saturday, December 21, 2019
Recording whistling melodies
Nice result was obtained with 2 Beyer M55 microphones connected out of phase fairly close to each other (12in) so that a lot a bass reaction takes place and whistling to one of the mics at about 12in. (Using the Lou Burroughs trick of omni mic noise cancelation connection, the reduction of bass suited whistling voice capture).
Playing the piano with both hands, a simple exercise
Some hints:
Bass is into rhythm (rhythm section). So it may be worth thinking the bass while playing.
One can try for example the classic French song, La Mer.
Playing deep bass melody...
Do
La
Fa
Sol
and repeat in loop...
Counting 4 1/4s or 2 1/2s for each note.
The adding the melody with right hand.
If left hand fails to keep up with groove an exercise is to try, Do, La, Fa, Sol ie C A F G in loop while playing with the right hand moving it around, touching objects, writting with pen on paper etc while left hand plays in rhythm. A similar exercise may be often done by orchestra conductors for the purpose of obtaining independant movement of each hand.
Recording the drums
A historical journey:
https://recordingmag.com/resources/recording-info/mics-miking/recording-drums-then-and-now/
Thursday, December 19, 2019
AKG D190E vs Shure Unidyne B 515SD Mexico both mics with or without the Pleiades (130Ω,40mH) filter
Both mics sung to at about 4in.
The D190 sounds like barking midrange without the Pleiades gentle slope high pass filter. Possibly due to proximity effect boosting mid bass and mid.
The 515SD sounds more bright, less mid heavy than the D190.
With the Pleiades filter the AKG D190 sound amazing, with very clear midrange and nice bass and treble, smooth sound.
With the Pleiades filter the Shure 515Sd sounds very nice, natural sound too but more treble.
A way to derive the Dorian musical key
If we make the usual expansion 1 3 5 7 9 11 13 from bass A:
A C E G B D F (for example playing sustaining notes on the piano).
F does not sound right while #F does.
So we have:
A B C D E #F G A ie A Dorian
Similarly with bass D:
D F A C E G B D sounds superb
D Dorian is:
D E F G A B C D ie
re mi fa sol la si do re
All white or natural keys.
The Dorian key is very important as it is minor but the chord created with bass the 4th note of the scale is major 3rd instead of minor third. Therfore this chord sounds happy and uplifting:
It can be heard:
At the sung vocalise part of the Great Gig in the Sky - Pink Floyd, Claire Torry
The chord progression is G minor 3rd minor 7th to C major 3rd major 7th major 9th
Also on To Get Lucky - Duft Punk
many pop songs that immediatly stand out
Monday, December 16, 2019
Important hints for the operation of the dynamic cardiod microphones AKG D 12 D 25 D 30 D 40 D 36 D 45 related to output impedance with respect to frequency
This document is live on eBay.fr in an item's photos.
https://www.ebay.fr/itm/TRES-RARE-MICRO-PROFESSIONNEL-AKG-D25-DANS-SA-BOITE-DORIGINE-A-REVISER/254453236997?hash=item3b3e984505:g:37oAAOSw9V1d9Pfk
Summary:
Below 300 Hz however the microphone output impedance impedance rises until it becomes twice at 50Hz.
The graph also shows some increase of output impedance at 1KHz.
The paper describes the importance of the amplifier input impedance being greater than the nominal value.
Microphone techniques by Shure
https://www.shure.com/damfiles/default/global/documents/publications/en/performance-production/microphone_techniques_for_live_sound_reinforcement_english.pdf-3df433145fca686a736beeb5da588efa.pdf
The link has been found from here:
https://www.shure.com/en-GB/support/find-an-answer/model-515sd-for-music
A low mass microphone membrane gives sentimental sensitivity to a microphone
Sentimemtal sensitivity is Vicky's comment while listening to a vocal recorded with the Fostex M80RP while comparing other takes with other microphones.
Pleiades (R,ωL) filter vs 2 omni mics out of phase part 2
(Later addition: there is a mistake in this post, the AKG D190 used seems to be a D190ER version with internal low cut).
There may had been systematic errors on part 1.
One of them is listening with headphones sending sound to one ear as Sony TC-D5 Pro II was used instead of Pro (I) which has a mono switchable mode.
After listening again with Vicky on her hi-fi system, the Pleiades filter seems to win and the first 3 used mics sound the best on the particular male singing voice.
Signal path:
TDK SAX type II cassette recorded on part 1 - Pioneer CT-443 cassette deck - Musical Fidelity Synthesis amplifier - Spendor Audio Systems SP1 speakers
AKG D190E with Pleiades (130Ω,ω40mHΩ)
Great smooth sound
Fostex M80RP with same Pleiades filter
Lower volume, great sound and as Vicky mentioned sentimental detail or sensitivity, it demonstrates how the singer feels
Shure VP64
Nice big sound
Shure SM63
Spitty, excessive mouth noises etc
Beyer M55
Vicky mentioned high frequency peak problem on both Pleiades filter setup or 2 omni out of phase setup
2x Beyer M55 out of phase
Vicky mentioned lack of bass
(perhaps mics were used 2 close to each other canceling more LF content than needed
M55 without Pleiades (R,L) gentle slope high pass filter
Vicky mentioned how unrealistic it sounds, like an amateur recording
Sunday, December 15, 2019
Differences between a cat and a cassette recorder
The cat is self healing, cleaning.
The cat may wish a warm hug in the morning when she feels cold.
Saturday, December 14, 2019
Pleiades (R,L) filter or two omnidirectional microphones connected out of phase while singing to one of them?
There are errors on this post. See part 2:
https://euroelectron.blogspot.com/2019/12/pleiades-rl-filter-vs-2-omni-mics-out.html
Signal path:
Male singing voice at high register - mic - Pleiades (130Ω,40mH) filter - Sony TC-D5 PRO II on one channel - Sennheiser HD580 (signal to one earphone).
Or
Male singing voice - 2x Beyer M55 out of phase - military transformer - Sony TC-D5 PRO II on one channel - Sennheiser HD 580 signal to one ear
The ingenious trick by Lou Burroughs (Electro-Voice) clearly wins. (Later addition: on latter auditions of recording it did not, see part 2).
It is described in his book, Microphones.
Bass or mid bass or mid heaviness disappears together with ugly room ambient noise. One is left with a very clear and bright vocal.
Before trying this trick many good quality microphones were tried today while making a demo of the song Πως θα Ηταν.
A Pleiades filter of (130Ω,40mH) was connected to each mic for reducing bass heaviness to listener's brain.
The following mics were tried:
AKG 190
Nice by mid bass heavy
Fostex M80RP
More treble but bass heavy
Shure SM63
Treble but bass heavy
Shure VP64
Loud but less treble and some bass, mid heaviness
Same for the Shure RadioShack omni microphone
Same for the 600Ω Beyer M55.
Nice but somewhat bass heavy
Then 2 Beyer M55 where connected out of phase to each other to a military transformed used as a hybrid adder (mixing is an incorrect word as it means in electronic engineering multiplication of 2 signals and not addition). The output from the transformer was connected to one channel of Sony TC-D5 Pro II similarly to previous mics. The 2 omni mics were held with the back of each touching the front of each.
Excellent sound.
No bass heaviness, mid bass heaviness, boxiness etc.
Results were confirmed by listening instead of to Sennheiser HD 580 to also the linoleum Pleiades Auratone 5C type monitoring speaker with a Tesla 5in fullrange drive unit connected to Sony Tac-D5 headphones output.
A very smooth sound and it sounds professional. On most of these demos male singing voice was recorded together with Yamaha PSS-14 keyboard used for string chords.
Speaking voice sounds very thin but singing male voice sounds just right. Wish I knew this trick when starting playing with electron tube small reel to reel recorders. They always sounded mid bass heavy and I didn't know it was my brain creating the mid bass heaviness.[Lowe, Morgan]
Later addition: A lower value of R or L may do the trick. Or using the Pleiades (130Ω,ω40mHΩ) with the Pleiades V6 booster amplifier with the CV2269 electrometer tube or other electron tube at low anode current so that a second low cut filter is created, see older posts.
Reference:
Sound picture recording and reproducing characteristics - D. P. Lowe, K. F. Morgan - Journal if the society of motion picture engineers
Friday, December 13, 2019
Hello to Ukraine, Germany, Denmark, and Hong Kong
Euroelectron pageviews now.
Entry Pageviews
Ukraine
20
Germany
3
Denmark
1
Hong Kong
1
One Henry divided by one Ohm makes one second
Time constant = τ = L/R
Time constant τ is the time it takes for an inductor in series with resistor to get to 63% of full current. Equivalent to a train running at 63% of full speed.
Trains take time to have their speed increased because they have mass.
Inductors take time to have the current trough them increased because they have inductance.
See also Harry Olson (RCA) acoustic, mechanical, electrical analogies.
See also The Feynman Lectures on Physics - Feynman, Leygton, Sands
See also Introduction to System Dynamics - Searer, Murphy, Richardson
1 Ohm times 1 Farad makes 1 Second
Ω x F = s
This is because 1Ω in series with 1F has a time constant of 1 second. This means the capacitor charges to say 63% of supply voltage in one second.
http://www.learningaboutelectronics.com/Articles/How-long-does-it-take-to-charge-a-capacitor
Henry times angular frequency makes Ohm
inductive reactance = ωL = angular velocity x inductance
angular velocity = 2 times 3.14... times frequency = 2πf
R in series with L create a complex impedance:
(R,ωL) ie
(R,2πfL)
This is a vector. It's magnitude and angle depend on frequency.
See also rotating vectors (phasors).
See also:
Engineering Circuit Analysis - Hayt Jr, Kemmerly
Thursday, December 12, 2019
On eliminating the barking effect from some vintage dynamic AKG microphone
It is likely that the mid barking effect comes from the proximity effect increasing mid or mid bass.
AKG D1000E
Sounded great with its (R,C-L) filter
Even brighter when cascading also the Pleiades (130Ω,40mH) filter.
It sounded too bright with a Pleiades (24Ω,11mH)
It sounded more wide bandwidth than perhaps needed with its low cut off and a Pleiades (130Ω,40mH)
D190
Sounded great with a Pleiades (24Ω,11mH) filter.
A flat mic. Ie smooth, flat frequency response ie sensitivity.
Very nice sound with Pleiades (130Ω,40mH)
D130 omnidirectional sounds nice too with Pleiades (130Ω,40mH).
A great advantage of these AKG mics is that the sintered bronze mesh cover is washable (at your risk). There is absolutely no odor.
Pin order 1-4-2-5-3 of German DIN connectors
So that 3 pin and 5 pin thinking is compatible:
Thread on UHER 4200 stereo:
https://www.vintage-radio.net/forum/showthread.php?t=125662
The original key of Vocalise - Rachmaninov is E minor (ie all F ie Fa are sharp)
See
Vocalise - Rachmaninov - Wikipedia
Listen the orchestra arrangement by Rachmanov conducted by himself in 1929
https://m.youtube.com/watch?v=y1b5OyYPF8Q
Sunday, December 8, 2019
Most in music making in a few words, Πως φτιάχνεται η μουςικη με λιγες λέξεις
Ολα ορίζονται και αναφέρονται στο μπαςο (απο την ελληνική λέξη βασις). [Bach, Niedt]
Το μπαςο ειναι σε καθε χρονική στιγμή μια μονο νοτα αλλιώς ακουγεται τελείως λάθος και δεν ειναι πια βαςη.
Τα παντα στη μουςικη αναφέρονται στις λευκές η Natural νοτες.
Αυτες ειναι μονο 7 και δεν υπαρχει τίποτα άλλο στην δυτική μουςικη. Με αυτες τις 7 γινονται ολα απο συμφωνία μεχρι ροκ συναβλια, η ενα απλό θαυματουργό τραγουδάκι.
Το μονο που χρειάζεται να θυμομαςτε ειναι τον απλό κανονα, νοτα παρα νοτα πανω απο το μπαςο.
Αν πχ το μπαςο σε δεδομένη στιγμή ειναι Ντο επιτρεπόμενες νοτες για συγχορδίες η αρμονία ειναι οι
Ντο Μι Σολ Σι Ρε Φα Λα (δηλαδή παλι οι 7 νοτες αφου δεν υπαρχει τίποτα άλλο).
Δεν χρειάζεται να χρησιμοποιούμε και τις 7, να συνηχουν όλες μαζι, οπως ένας καλός σεφ μαγειρικής διαλέγει με γούστο τι θα βαλει, ποσο θα βαλει, και δεν βάζει ολα τα υλικα μαζι. Οπως και η ζωγράφος δεν ανακατεύει ολα τα χρώματα γιατι βγαινει μαύρο η καφέ σκούρο.
Στατιστικά στα περισσότερα, μουσικά τραγούδια, συμφωνίες, κτλ:
Το 1 3 5 χρησιμοποιειται συχνά.
Πχ Let it Be - Beatles στο σημείο "when I FIND"
(Μπαςο Ντο, συγχορδία Ντο Μι Σολ)
Αν χρησιμοποιούμε μονο 1 3 5 τα πράγματα ειναι πολυ βαρετά σαν να τρώμε κατι που περιεχει πόνο ενα υλικό.
Ετςι οι μεγάλοι συνθέτες χρησιμοποιουν και άλλες νοτες απο το ανάπτυγμα 1 3 5 7 9 11 13 15
Μπορουμε λοιπόν να χρησιμοποιήσουμε το διάστημα 7ης.
Πχ Old and Wise - Alan Parsons Project
Το τραγουδι αυτο χρηςιμοποιει το διάστημα 7ης σχεδόν συνεχεια. Για παραδειγμα στο "...far as my eyes can SEE". Στο SEE ειναι μπαςο Φα και αρμονία Φα Λα Ντο Μι. Ο τραγουδιστής τραγουδάει Λα ετςι μπορουμε να παίξουμε Φα μπαςο, κάποιο άλλο όργανο Ντο και κάποιο άλλο Μι.
Το διάστημα έκτης εμφανίζεται σχετικά συχνά. Ειναι το 13 στο ανάπτυγμα. Πχ αν το μπαςο ειναι Φα εχουμε Φα Λα Ντο Μι Σολ Σι Ρε. Το Ρε ειναι διάστημα 6ης απο το μπαςο. Παραδειγμα στο τραγουδι A Time for us - Nino Rita. Στη εκτέλεση Ray Conniff στο "for US" το μπαςο ειναι Φα και η μελωδια ειναι Ρε.
Πιο σπάνια εμφανίζεται το 11,13,15 που στην πραγματικότητα ειναι 2,4,6
Παραδείγματα:
Δευτερη συγχορδία του Moonlight Sonata - Beethoven
Εχουμε μπαςο Σι και αρμονία Ντο Μι Σολ.
Για να ακουστεί πιο ωραια ο Λουτβιχ έβαλε Σολ Ντο Μι.
Η κλίμακα ειναι Ντο διεση μινόρε. Αρα ολα τα Ντο, Ρε, Μι, Φα, Σολ, Λα, Σι ειναι διεση.
Αρα αυτο που χρειάζεται παντα να γνωρίζουμε ειναι σε ποια κλίμακα η Musical Key, η κλειδί βρισκομαστε.
Αλλιώς η μουςικη, μαγική πορτα δεν ανοίγει.
Περισσότερα στο:
Bach Bass Rules - Bach, Niedt
Summary:
All needed to remembered is than when bass is for example C (Do) the chord or harmony can be any of the (C E G B D F A, do mi sol si re fa la notes. Similarly for any bass note. Everything is referred to the 7 white or natural notes. Another important thing to remember or derive is what are the sharps or flats of each musical key. For example the 3rd chord of Back to Black - Amy Winehouse is B D F A, si re fa la but B, Si is flat as the key is D, Re minor.
Preparing dissonant intervals can be like sending arrows of love
For example:
Playing on the right hand
E sustained
then while E sings playing F bass (left hand) and A with the right hand.
(So what is played is F A E but E is played in advance and the interval of major 7th F E is prepared.
A chain can be made for example:
Playing E
Then adding F A as above
Then playing D
then adding E G as above
Then C
then adding D A as above
Then B
then adding C E as above
Then A
then adding B D
Then A resolved to #G
then adding E E
Then A C A
Dissonant intervals do not sound dissonant at all if the composer knows how the game of misic is olayed
All one needs to do is prepare the intervals to the listener's brain.
See next post.
See also Bach Bass Rules.
Τα διαφωνα μουσικά διαστήματα κλαίνε αισθανόμενα παρεξηγημένα
Έκλαιγαν τα διαστήματα έβδομης, ειδικα έβδομης μεγάλης (πχ Φα Μι), και ενάτης.
Έκλαιγαν γιατι ο πολύς ο κόσμος, μουσικός η μη, χρηςιμοποιει αυτήν την στερεότυπη ταμπέλα του διαφωνου.
Τα πειρε στην αυγά λια της η Βελουδινα και τα πήγε μαζι με την Κανελινα στους σοφους γλαρους στην παραλια.
Οι σοφοί γλαροι τους ειπαν:
"Μην μασάτε, είστε υπεύθυνα για οτι ωραιότερο εχει συμβεί στην μουςικη και στην ψυχή όσων την ακούνε"
Πέταξαν απο την χαρά τους όλοι και άκουσαν το:
Qui Tollis - Bach απο την Mass in B minor - Bach.
To χοροδιακο Qui Tollis που ξεκινάει με 6η προετοιμαςμενη με μπαςο Ρε, στο επόμενο μετρο 7η προετοιμασμενη με μπαςο Μι και στο επόμενο μετρο 9η προετοιμαςμενη με μπαςο Λα, όλες μαζι αγκαλιά, κατω απο τις ακτίνες του Ηλιου που δεν αφήνουν καμια σκια στην αλήθεια.
Friday, December 6, 2019
Thursday, December 5, 2019
Updates to Πως θα Ηταν - Public Domain
Using the simple rule that if a note is sung by the vocal it is removed from the chord ie not played.
For example at the lyric Να περπατάμε at τα the note is A, the bass bD, the bass code is D7 and the key is F minor. So the chord is bD F A C but A is not played on the piano as it already exists in the vocal. Instead the C is doubled or it is bD bass and C F C(oct).
Listening, singing while playing on the piano with Vicky, it was agreed it sounds better as it leaves a frequency space for the voice to exist more comfortably.
A similar example of this practice is:
Prelude 20 op.28 - Chopin, at chorus
(The bass note at any time is not repeated on the right hand).
Other example with vocals is Say Something - Gteat Big World, Anguilera
https://m.youtube.com/watch?v=-2U0Ivkn2Ds
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Can cats react to music composing, jamming?
Velvetine, the cat feels very cold at early morning.
She might grab you and then she rests in your arms, exchanging heat as she rocks her tail up and down.
If one starts singing with height of notes according to the height of her tail at each iteration it may be a fun experiment.
Composing music without electricity
While playing on the piano, listening and discussing masterpieces such as
Vocalise - Rachmaninov in E minor
Prelude 20 op.24 in C minor - Chopin
Vicky suggested how important it must be to compose at dim light, possibly without electricity as it was done those hundred or much more ago.
It is true that one feels differently if disconnected from electricity. Pleiades labs is an example. A sinewave inverter is only switched on to power the house when electricity us needed. Batteries power the inverter, such batteries charged from just a few solar panels through a battery charge controller. Much of what may be done in a day in done with batteries, directly without the use of any inverter, if needed.
A hand crank charged small red torch bought from IKEA is used for dim light. It just converts chemical energy from what we eat, (we rotate the handle and there's dim light).
It is fun.
This iPad mini where these posts are written, edited is powered by the sun.
It is fun that an acoustic piano does not need electricity.
Cats or humans are fun too. They do not need to be charged by USB.
Vocalise op.34 Rachmaninoff
One of the finest examples on earth.
It shows possibly the height of what can be done with prepared dissonant intervals which sound beautiful and out of the earth for the simple reason that the listener's brain is prepared [Bach, Niedt].
The principle of least change in music is used as one chord morphs to the next by changing few notes at a time.
But let's hear or play in practice.
Reading from the transposed A. Gutheil - Boosey & Howkes edition in A minor for medium height voice.
Bass A and A C E (tenor voice begins C B C...)
Bass G and A C E (just like Moonlight sonata - Beethoven)
Bass F and A C E (F maj3 maj7 so much used by Pink Floyd)
Bass F and A B D (morphing begins)
Bass F and G B D (morphing continues)
Bass E and G B D
Bass E and G A C (new preparation for our brain)
Bass D and F A C
Bass C and E A C (C6)
etc
It is amazing how each chord is made to melt into the next.
The vocal at some points in time is creating additional clusters of nearby notes. It is best to read the score, sing and slowly play along in order to study.
See also:
Bach Bass Rules - Bach, Neidt
The ordinal key is in C sharp minor
Wednesday, December 4, 2019
Shure microphones catalog (past)
https://d24z4d3zypmncx.cloudfront.net/KnowledgeBaseFiles/cjrhnpk380syn0189omkw3mwc/1981_20Microphone_20and_20Circuitry_20Products.pdf
https://manualzz.com/doc/24945240/shure-catalog---american-radio-history
Tuesday, December 3, 2019
Αρκετα απο την φυσική σε λίγα δευτερολεπτα
Στο προηγουμενο euroelectron post:
https://euroelectron.blogspot.com/2019/12/much-of-physics-in-few-seconds.html
Much of Physics in a few seconds
Most interactions in nature are electromagnetic.
For example friction is an electric force. Hence the sparks...
Even swimming at sea is possible because of electric repulsion of say negative charged electrons on water molecules repelling negative charged electrons on our body. Similarly for a ship floating.
Electromagnetic interactions are described by Mawell's 4 equations.
But here is a summary in words. (Firstly said to me by Alekos Soupianos, splendid Physics teacher at school and home who had read Nobel laureate physicist Richard Feynman.)
1
A stationary charge creates an electric field.
For example electrons attracting protons on a condenser microphone membrane when the polarizing voltage is applied between membrane and the electrode behind it creating tension on the membrane.
2
A moving charge creates a magnetic field.
For example when someone speaks to a ribbon microphone.
The ribbon vibrates by he sound. Therefore the free electrons on the aluminium ribbon vibrate. They create a magnetic field which interacts with the magnetic field of the electrons spinning inside the magnets near the ribbon.
The magnetic force sends electrons back and forth to the edge of the ribbon where we get the signal voltage.
3.
An accelerating charge creates an electromagnetic field.
For example electrons accelerating or vibrating on the antenna of a radio station create an e/m wave, traveling at the speed of light in air, which when arriving at the antenna of the radio receiver, electrons inside it move corespondigly and music is received.
Other example, electrons oscillating in the sun make electrons oscillating on objects around us which make electrons oscillate in our eyes, and we see objects around us. Electrons also oscillate inside the metal coating of mirrors (metal coating at the back of the glass) so we can see ourselves.
See also:
The Feynman Lectures on Physics - Feynmann, Leighton, Sands
Richard Feynman on YouTube
Conceptual Physics - Hewitt
What was the value of 100 dollars in 1963?
Inflation calculator:
https://www.in2013dollars.com/us/inflation/1963?amount=100
Monday, December 2, 2019
Why do people ask what do you do? Γιατι οι άλλοι ρωτάνε με τι ασχολείσαι;
It makes no sense.
Δεν βγάζει νόημα.
It is more likely that what one does not do is more important.
Ειναι ιςως πιο σημαντικο τι δεν κανει κανεις.
Freedom begins by washing our clothes, ourselves, Η ελευθερία ξεκινάει απο το να πλένουμε οι ίδιοι τα ρούχα μας
Hand washing with gloves is gentle on clothes.
Το πλύσιμο στο χέρι με γάντια ειναι απαλό στα ρούχα.
Saturday, November 30, 2019
Producing a great vocal sound with almost any microphone at any distance
What needed is flat frequency response not from mic to loudspeaker (which can sound very bass, mid bass and treble heavy) but from singer's vocal chords to listener's brain [Lowe, Morgan].
A suitable adjustable setup could be as follows:
producer's brain - singer's vocal chords - mic at a suitable distance - passive variable slope low cut filter - small turn ratio step up transformer or input transformer to a one electron tube or JFET active mic booster - mic preamp - recorder - monitoring headphones or loudspeaker- producer's brain or listener's brain
(Making sure the following preamp is not transiently overloaded or s problems will occur).
The variable slope passive high pass filter can be a box with switchable inductors which are connected in series with a variable resistor or potentiometer. The L R in series combination is then connected across pins 2,3 (microphone's output).
Indicative values of inductance can be 10mH, 20mH, 40mH etc.
A variable resistor of 1KΩ should be adequate.
Once suitable favorite values of L, R are found, a neat and compact filter can be made inside a Neutrik XLR modules barrel, see Pleiades (R,L) filters inside XLR female to male adaptor made from Neutrik modules bought from Mouser.
The passive step up transformer can be a 1:2 or 1:3 turn ratio.
The active JFET mic booster amp can be a Pleiades K177, see schematic.
The active electron tube booster amp can be a Pleiades V6 which is powered by a single battery, see schematic including use of CV2269 electrometer tube requiring only 1.2V for both filament and plate.
An active bipolar transistor booster can be a Pleiades BC109, using the BC109 bipolar transistor as used on the EMI TG 12345 mixer.
An added advantage of above setup is very low noise ie high signal to noise ratio, world class or possibly state of the art.
Reference:
Sound Picture Recording and Reproducing Characteristics - D. P. Lowe, K. F. Morgan - Journal of the Society of Motion Picture Engineers
Grampian GR1/L ribbon mic on close vocals
This is another signal path that produced a very nice male vocal sound with no bass or mid heaviness, excellent treble, transient detail, high signal to noise ratio, and no p or s problems.
Some low cut was done by the use of specially made low inductance transformer of about 9.7mH primary inductance and about 1:9.3 turn ratio. A very small Magnetec nanoperm glass metal ring core was used, (smaller that the Magnetec 073).
Then one K117 JFET resistance coupled amplifier was fed.
Then the extra low cut needed was done by turning the LF control fully counterclockwise on the Tascam porta 07 (running cassette at double speed) which was used for the recording.
Setup, signal path:
Male voice singing She gives me love - Whitney Houston at 4-6 in, mic also 1ft from Pleyel upright piano - Grampian GR1/L - Pleiades 9.7mH, 1:9.4 step up (high pass) transformer - Pleiades K177 booster mic pre running with 1.2V - Tascam Porta 07, gain trim at max, channel fader at max, master fader at 0dB - TDK type II cassette - Sennheiser HD 580 or Bang & Olyfsen Beocenter 2600 amp and loudspeaker
Friday, November 29, 2019
How is Parmesan cheese made
factory
https://m.youtube.com/watch?v=9BZEy6dSY6Q
home
https://m.youtube.com/watch?v=s1k1w7SnNEY
Wednesday, November 27, 2019
Μπορει ενα (χαζό) μικροφωνο να εχει εγκεφαλο;
Η χαζομάρα των μικροφωνων έγκειται στο οτι δεν μπορούν να αγνοήσουν τον θόρυβο οπως κανει ο εγκεφαλος μας. [Hollywood]
Ετςι ακομα και ηχογραφηςη με το καλυτερο μικροφωνο ακουγεται σαν χαβούζα σε θορυβώδες κακογουςτο χαμαμ αν δεν ειναι απόλυτα ελεγχόμενη η ακουστική.
Επισεις η ανθρώπινη φωνη μορει να ακουστεί με τόση έμφαση στα μπάσα σαν λάσπη η βόθρος αν δεν αντισταθμιστούν ψυχοακουστικα φαινόμενα οπως, ισοφωνικες καμήλες (καμπύλες) και voice effort curves. [Lowe, Morgan]
Στο προ προηγουμενο post περιγράφεται η εφαρμογή ενος κόλπου απο το βιβλιο του Lou Burroughs της Electro-Voice για μείωση του θορύβου και της ψυχοακουστικης έμφασης του μπάσου στην ηχογραφιςη ανθρώπινης τραγουδιστικής φωνής.
https://euroelectron.blogspot.com/2019/11/2-out-of-phase-shure-sm63-microphones.html
Αναφορές:
Cinema Engineering - Hollywood - (εισαγωγή)
Sound Picture Recording and Reproducing Characteristics - D. P. Lowe, K. F. Morgan - Journal of Society of Motion Picture Engineers
Microphones: Design and Application - Lou Burroughs
A way of creating a mic with a brain?
Mics cannot descriminate between wanted signal and noise like our brain does (see Cinema Engineering Hollywood book).
On the previous post there is a very useful trick by Lou Burroughs.
2 out of phase Shure SM63 microphones on close vocals
Is this a way of creating a mic with brain?
At your risk. Protect your hearing.
This is revisiting the trick described in the Microphones - Lou Burroughs (Electro-Voice) book on deliberately connecting 2 omnidirectional or pressure mics out of phase and singing to one of them for noise canceling and reduction of bass heaviness.
Signal path:
Male voice singing at high register - 2 SM63 connected out of phase in (electrically) series - Sony TC-D5 Pro, in mono mode - Sennheiser HD 580 - listener's (singer's) brain
Mics are connected as:
Pin 2 of mic 1 to pin 2 of preamp, pin 3 of mic 2 to pin 3 of mic 2, pin 2 of mic 2 to pin 3 of preamp.
So total impedance is 400Ω and mics are out of phase.
Then singing at about 1in from the in phase mic.
When mics are at say 2 ft apart the sound is bass heavy and there is ambient low frequency noise.
As mics are approached ambient noise falls dramatically until only a small high frequency hiss can be heard.
A distance of about 2in between mics gave the best sound with no bass heaviness and nice mid and treble detail.
Then the mics where again taken apart about 2 ft and a Pleiades (130Ω,40mH) gentle slope high pass filter was inserted between in phase mic and preamp. The sound was even more bright with less midrange.
Tuesday, November 26, 2019
Θα
Δεν υπαρχει θα.
Θα - Χαρυ Κλυν
https://m.youtube.com/watch?v=FHxNeycuGHo
Στα αρχαία ελληνικα δεν υπαρχει λέξη θα.
Ειναι πχ. λύω ενεστώτας, λύσω μέλλοντας
Το θα προέρχεται απο το θ(ελω ν)α.
(Μαρω)
(Και στ' αγγλικα το will σημαινει θελω, σημαινει και διαθήκη.)
<br />
<br />
<br />
Μπαίνει και το πρεπει και γινεται κουλουαχ, κουλουαχατα.
Τα Χριστουγενα θα πάμε στην θεία Πιπιτσα.
Θα ειναι και η θεία Μελπωμενη και ο Μητσος.
Θα φορέσεις η θα πρεπει να φορέσεις γραβάτα.
Ποιος θελει τι;
Θα μ'αφησεις;
Μην μ'αφησεις.
Δεν πρεπει να μ'αφησεις.
Δεν θα πρεπει να μ'αφησεις.
Θα.
Και η γκομενα φεύγει πρωτη.
"Χαρη σου κανει"(Μιχάλης).
Ενω μπορει κανεις να περναει καλα χωρις θα. Φτάνει να το θελει.
Sunday, November 24, 2019
Τραγούδια αντικαριολισμου, αντικαριολιστικα τραγούδια
Δεν κλαίω για τώρα - Βίκυ Μοσχολιού του Ακη Πάνου
Αυτος ο αλλος - Νίκος Γούναρης
https://m.youtube.com/watch?v=R073CrCgWSM
Pleiades (R,11mH) filter experiments with the Sennheiser MD 441U3, Fostex M55RP, Electro-Voice RE15
At your risk. Protect your hearing.
After experimenting yesterday with a Pleiades (R,L) filter for the Shure VP64 (see yesterday's post) it has been decided out of duriocity to try such a (low R,11mH) filter with a Fostex M55RP, Sennheiser MD 441U3 and Electro-Voice RE15 microphone.
All these mics are of the order of 200Ω so a 1:2 transformer with 1 Henry input inductance was used to step such impedance to 800Ω and then feed the Sony preamplifier.
Signal path:
Male voice singing at a high register - mic at 1in - Pleiades (R,11mH) gentle slope low cut or high pass filter - Western Electric 1:2 signal transformer - Sony TC-D5 Pro - Sennheiser HD 580 - singer's brain as listener's brain
With the yesterdays filter set at (37Ω,11mH) the M55RP sounded amazing.
So did the the MD441 U3.
The RE15 sounded reasonant at some high frequency band. In fact the sound might had been similar to the VP64.
Encouraged by the beautiful, easy, sparkling and natural sound of the M55RP, and MD 441U3 the multi turn variable resistor was adjusted while singing in order to find sweet spots.
After finding a nice adjustment the crocodile cable clips are disconnected from the variable resistor and its value is measured with a digital voltmeter,
It is stricking that repeating the experiment 2 times with the M55RP the values measured where 19Ω and then 20Ω.
Then while performng the experiment with the MD 441U3, the value measured was 24Ω.
So a Pleiades filter of about (22Ω,11mH) gives a beautiful sound with both mics at 0-1 in.
A bright sound but with no s artifacts. An amazing sound reminding the vocals of The Power of Love - Frankie Goes to Hollywood. Or the amazing When I Fall in Love - Nat King Cole
It is amazing what can be done with just an inductor connected in series with a resistor and the total connected in parallel with the mic's output or voice coil.
This Pleiades (22Ω,11mH) filter will possibly be built inside a Neutrik module XLR barrel adaptor. The color stripe in the centre already painted by nail varnish is light green, Annie color code 257.
The (130Ω,40mH) filter used with 600Ω Fostex microphones has a blue (Annie 245) stripe adaptor housing.
What is the difference in sound between the M55RP and MD 441U3 with such a Pleiades filter?
Hard to describe in words. Both mics sound amazing. They have the detail of ribbon mics. It is surprising that the MD441U3 may have sounded even more neutral. But the M55RP has perhaps some more presence. This is perhaps expected as the MD441U3 has a flat frequency response.
If a Pleiades Fikter is not connected, all that can be heard is bass and mid exaggeration by the well known objective and subjective effects described in the Lowe, Morgan paper.
Reference:
(Flat frequency response not from mic to loudspeaker but from singer's vocal chords to listener's brain) Sound Picture Recording and Reproducing Characteristics - D. P. Lowe, K. F. Morgan - Journal of the Society of Motion Picture Engineers
Saturday, November 23, 2019
The power of love
The Gabriella Aloin cover version is in B minor (so that female voice remains warm at a low register). B minor means that only F and C and A are sharp.
So chords move from B to G7 ie B D #F to G B D #F
https://m.youtube.com/watch?v=zNpeK7sDLzE
The original version is in F minor which best suits the male voice to shine on a high register.
https://m.youtube.com/watch?v=NyoTvgPn0rU
See older posts for figured bass (chords).
Altec 604 and 211 electron tubes
Discovered about Altec 604E on Wes Dooley interview, see link on yesterday's post.
This amps driving them seem to be single ended class A, 211 electron tubes.
Test Altec 604-8G:
https://m.youtube.com/watch?v=qhEbphmanIQ
Crowley and Tripp microphone patent
After reading the Wes Dooley interview (link in yesterday's post), Crowley and Tripp ribbon microphones were mentioned, technology bought by Shure.
Then a Mixonline article revealed some patent titles.
A European espacenet patent office search found this patent:
https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=WO&NR=2006047048A2&KC=A2&FT=D&ND=3&date=20060504&DB=EPODOC&locale=en_EP
Shure VP64, Fostex M80RP and Pleiades filters
At your risk. Protect your hearing.
For many or most applications any mic may need a gentle slope low cut filter.
A directional mic will need it due to the proximity effect and also for subjective (Fletcher Munson) and voice production voice effort spectrum curve compensation [Lowe, Morgan].
A non directional mic will need the gentle slope low cut filter not for the proximity effect but for the other effects.
On previous posts it had been described that a suitable gentle slope Pleiades (R,L) filter for the Fostex M80RP, M88RP both 600Ω Japanese versions is a (40mH,130Ω)
Can a Shure VP64 omnidirectional microphone sound as good or close with a suitable choice of R L values ie Resistance in series with inductance and the total connected in parallel with the mic's output?
This test are done while singing which normal needs more low cutting than speaking especially when male voice is singing in a higher register (counterintuitively). But this is what seems to be happening in practice while singing and listening through headphones in real time.
The Fostex M80RP, is possibly 600Ω. The Shure VP64 is about 300Ω. It was stepped up by a Western Electric 1:2 transformer to 1200Ω using a previous setup used for the Shure Unidyne III, see previous experiments.
Signal path:
Male voice singing Πως θα Ηταν in F minor ie first voice note is high C - mic at 2-3 in - Pleiades (R,L) gentle slope low cut filter - WE 1:2 transformer used only for the VP64 mic - Sony TC-D5 Pro - Sennheiser HD 580 - listener's brain
As mentioned above a nice sounding Pleiades filter for the Fostex M80RP is (130Ω,40mH)
A nice filter found by experiment for the VP64 is (37,11mH)
The sound is very loud, bright, harsher than the Fostex M80RP with no bass heaviness.
Other useful combinations are (64Ω,11mH,), (29Ω,11mH), (42Ω,11mH) and (25Ω,3.8mH) which is more bright.
The (130Ω,40mH) was tried at 1200Ω, nice but perhaps harsh. 2 Pleiades filter were also tried in cascade ie (130Ω,40mH) and (240Ω,11mH) but still the low resistance 11mH filter was preferred.
Very good quality sound is possible with just one Resistor and Inductor added to a mic line.
The omnidirectional moving coil seems to sound loud and clear with some or little harshness at high frequency but cannot match the smoothness or HF detail of the coil ribbon mic. Both mics sounded great.
Latter addition: Such Pleiadss filter with low resistance and 11mH inductance sounds also very nice on the Sennheiser MD 441U3 and Fostex M55RP, see next day's post.
Reference:
Motion Picture Recording and Reproducing Characteristcs - D.P. Lowe, K.F. Morgan - Journal of the society of motion picture engineers
Friday, November 22, 2019
Is there an encyclopedia of record producers or recording studios?
Or record companies?
Or microphones?
Or a dictionary of recording engineering terms?
Or an encyclopedia including most key people is sound production, reproduction.
For example Allan Blumlein, Lee de Forest, E. H. Armstrong...
Or an encyclopedia encompassing very important people in areas related to music. For example:
Composers
Piano manufacturers
Microphone inventors
Synthesizer inventors
Record producers
Electronic engineers
For example
J. S. Bach
Vivaldi
Allan Blumlein
....
An encyclopedia that would include important bands too such as Pink Floyd
An encyclopedia that in order to be kept small would include the most important
A simple melody
This came about while jamming on the small miraculous
compute-a-tune keyboard by Waddingtons, UK
This 70s computer produces nice analog (square wave based?) sound without any hiss or noise at all, sending to tea or to the cleaners so many sought after equipment.
This melody came after playing
Oxygene - Jarre
and after remembering what Bach or Oldfield do at Tocatta and Fugue in D minor or Tubular Bells in A minor respectively.
The note sequence is:
Key G minor ie all notes are white except E flat and B flat.
G E D E
G E D E
G D C D
G D C D
F D C D
F D C D
F C B C
F C B C
The echo switch is on with plays each note 3 times and sequencer speed is set at max.
A nice sound.
Wes Dooley discussing ribbon mics
https://www.soundonsound.com/people/wes-dooley-audio-engineering-associates
Thursday, November 21, 2019
Μερικα ηχητικά, ψυχοακουστικά πειράματα με ενα πιάνο
Στο επόμενο euroelectron post:
https://euroelectron.blogspot.com/2019/11/sound-experiments-with-piano-or-keyboard.html
Sound experiments with a piano or keyboard
How does a C sound together or before an E? (interval of major 3rd)
How does a C sound together or before an E flat? (interval of minor 3rd)
How does a C sound together or before a higher B? (interval of major 9th)
How does an F sound together or before a higher E? (interval of major 7th)
How do intervals of major 6th sound like?
Etc.
Can one be self taught to remember their sound by heart without the presence of a piano or keyboard needed?
Intervals is the source material of music.
Perhaps like alphabet for language.
Sennheiser MD441 microphone
Io Che Amo Solo Te - Sergio Endrigo live
https://m.youtube.com/watch?v=nni52gQTPR8
Στίχοι του Πως θα Ηταν, Lyrics of Πως θα Ηταν
According to Stelios Giannakopoulos (engineer of Columbia studios Athens), the lyrics define the structure of a song. For example a chord progression may be repeated but lyrics may change, so the lyrics sheet shows what is happening.
The chord progression, harmony or numbered bass is here:
Mon 28 Oct 2019
https://euroelectron.blogspot.com/2019/10/updates-to-song.html
Some phrases are sung by only man, some by only woman, some by both. Verse 1 by man only, verse 2 by woman only, verse 3 by woman only. On chorus both man and woman on some phrases.
Vicky plays a very important role in determining the structure and other preproduction aspects of this song including writting the score.
Πως θα Ηταν - Public Domain
Πως θα ηταν
Στην αγκαλιά σου σαν παιδι
Να περπατάμε στη βροχή
Τ' ονείρου
Πως θα ηταν
Σαν πεταλούδα να πετώ
Και την δροσιά του ουρανού
Να νοιώθω
Σε κήπο
Κήπο μαγικο
Άνθη σου διαλέγω
Πρωτη εγώ
Σε κήπο
Κήπο μαγικο
Άνθη σου διαλέγω
Πρωτη εγώ
Πως θα ηταν
Στην αμμουδιά να με κρατάς
Και γελάν' απο ψηλά
Τ' αστέρια
Σε κήπο
Κήπο μαγικό
Άνθη σου μαζεύω
Πρωτη εγώ
Σε κήπο
Κήπο μαγικο
Άνθη σου προσφέρω
Πρωτη εγώ
Wednesday, November 20, 2019
Tuesday, November 19, 2019
Trumpet and ribbon microphone, Johnny Carson playing
Johnny Carson playing his highest note
https://m.youtube.com/watch?v=J5H1ayuxMMI
Saturday, November 16, 2019
Compliant drum sticks
At your risk.
For some reason they sound very nice, the oposite of harsh.
For example a broken wooden drum stick whose 2 pieces had been slid (unglued) back to place.
Management at Gore
Terri Kelly: W. L. Gore's original management model
https://m.youtube.com/watch?v=47yk2upT7tM
Friday, November 15, 2019
How are electron conduction cables being made?
General Cavy factory showing wire drawing
https://m.youtube.com/watch?v=EzFw9pH6FwQ
It's funny how many can't live without such technology yet youtube views are only 100.
The BNC connector name comes from Baby Neill Constant
https://en.m.wikipedia.org/wiki/BNC_connector
This was found while searching on Wikipedia for Amphenol after searching for the MC4 photovoltaic connector.
Thursday, November 14, 2019
Stereo headphones output from Yamaha DX7 II.D
The trick is to connect 2 1/4in jacks to the L R line outputs to make the synth understand you want it in stereo mode. Uncabled 1/4in jack adaptors may be used.
Then headphones will play in stereo too.
For example one patch can then be sent to left channel and another or the same patch to right channel.
This is done by used the Dual, Pan press knobs etc accordingly, see operating manual.
The same patch sent to each channel makes for a very nice stereo effect.
Tuesday, November 12, 2019
Comparing various mics while singing a higher pitched phrase of Freelove - Depeche Mode
This is the first time on a Pleiades test that a made in Mexico Shure mic beats one made in USA.
As many microphones as possible were tried as quickly as possible on such a subjective auditioning test.
Here it is:
Signal path:
Male voice singing the high pitched phrase "Hey Girl" from Freelove - Depeche Mode, in the correct key - mic at a distance from 1-2 in to 12in - Pleiades (130Ω,40mH) gentle slope high pass filter - SONY TC-D5 Pro preamp in mono mode - Sennheiser HD 580 - Singer's ears and brain
Vivanco DM200
Not bad at all, very bright, interesting.
An x(-1) adapter was not used as this mic is internaly wired out of phase.
(The particular Sony TC-D5 used phase reverses from XLR mic in to phones out).
Fostex M80RP
Possibly the best on this test, smooth, detailed, a sense of the good side of a good condenser mic too, no bass problems.
Revox AKG variable D, D19C/200
With its low cut on, at higher distance.
Amazing, very loud, detailed.
Beyer M119
Big but confused sound.
Beyer beaten up M61
harsh, resonant
Sennheiser MD211 omnis, 2 were tried, one with more bass
Too much bandwidth
Fostex M55RP handheld printed ribbon
More bandwidth than needed but much better.
RadioShack, made by Shure omni
Very nice.
RadioShack 33-3039 omni
Great.
Audio Technica AT802 omni
Nice.
Audio Technica AT804, Lanier (better one), Lanier, AKG D130 omnis
Harsh.
Beyer Dynamic M88
Very very loud.
Very nice at a higher distance.
Shure Unidyne III
Nice but a bit harsh like on Pet Sound's album use of this mic by Brian Wilson.
Shure 515SB, made in USA
Very nice but a bit bigger than needed.
Shure SM58, made in Mexico
Same to worse.
Shure 515SB, made in Mexico
Great, one of the best mics on this test, in fact it was used as reference due to its neutrality, smooth sound, treble detail, no bass offensive problems.
The first mic I have ever bought?
Beyer dynamic M260.80 (ribbon)
Amazing detail and naturalness at higher distance without the Pleiades filter.
Somewhat bass heavy.
Drills etc picked up from a far off block of flat's works in progress, sounded amazing.
Revox M 3500 600Ω
Too bright.
Without a Pleiades filter better at a distance of 2ft but room acoustics spoil the result.
BRC (ITT?) small Omni mic
Resonant at mid range.
Shure SM63
Very nice, very extended treble, very loud.
Paso M601 M
Very harsh.
Shure VP64
Nice and big.
Criticism of this test:
Different impedance mics will react differently with the particular fixed (130Ω,40mH) Pleiades filter. In fact this test may be an effort to find the best sounding mic with the particular filter for the particular male singing voice at a high register.
Subjective conclusion:
We are trying for something that has already found us - Jim Morrison.
The first mic I had ever bought sounded perhaps the best and most natural on this application.
I could not have appreciated this 20 years ago as I did not know at the time what a Pleiades filter is or could do (an inductor in series with a resistor connected in parallel to mic's output to reduce subjective bass heaviness).
The beaten up Fostex M80RP flat coil ribbon sends to the cleaners most of the mics on this test. Loud too. Smooth and detailed.
Most of the mics on this test without a Pleiades (R,L) gentle slope high pass filter sound like a cheap cassette recorder electret condenser mic. Conversely a cassette recorder with a good dynamic mic connected to a Pleiades filter can sound like a finished product.
The best singer in the world with an unsuitable or wrong signal path may sound incompetent.
Monday, November 11, 2019
Shure microphones live
Foolish Man - Killer Whale (live from a rooftop)
https://m.youtube.com/watch?v=7zt8HmNW3Kc#fauxfullscreen
The best sound absorber and worst sound insulator is the open window.
Making music simpler
Why using 4 part harmony when 2 part harmony can be used?
This idea came about while trying to accompany singing Freelove - Depeche Mode on glockenspiel using just 2 mallets.
It sounded great!
In fact it is 3 part harmony.
The male voice and the 2 notes played on glockenspiel.
In fact it is more than 3 part harmony as the notes on glockenspiel sustain a lot. So while playing the new notes then previous ones as still subtly there. This creates amazing prepared intervals which sound great.
What was played on glockenspiel goes somewhat like this:
D F if you' ve been hiding from
D bB love
D F if you' ve been hiding from
D bB love
D bB I can understand where you're coming
C E from , i can
bD F understand where you're coming from
C bE
D F (similarly 2nd verse)
and I'm only here
F bA
F bE to bring you
bB F freelove, let's make it
F bA clear
F bE that this is
bB F freelove, no hidden
bB F catch no strings att-
C bE -ached, just
F bA freelove
bE bA no hidden (bE is passing bass note)
bB F catch no strings att-
C bE -ached, just
F bA freelove
etc
When the next note to be played is the same as the previous it can be not played as it already keeps singing
It is very easy.
All that is needed is knowing the bass code of the particular music.
And knowing the scale ie what flats or sharps for which note.
For example if the bass code is C7 we play 1 3 5 7
C bE G bB (E and B are flat as on chorus the scale is F minor)
See also:
Bach Bass Rules - Bach, Niedt, PDF
Harmony - Piston
The bass code of Freelove - Depeche Mode
This only thing needed to play perfectly any music is to remember the rule 1 3 5 7 9 etc above bass but actually play the least needed for an intellectually simple result.
For example the beginning of chorus of Freelove - Depeche Mode:
All needed to know is that the bass is F.
(The scale or key happens to be F minor ie all notes A, B, D, E are flat).
So using the rule 1 3 5 ...
We play:
Bass F and F bA C
We may omit the F as it is already on bass and so play:
Bass F and bA C
We may omit bA as it happens to be sung, and so just play:
Bass F and C ...here, to give you...
B7 Freelove
Here is the bass code ie full harmony of Freelove - Depeche Mode:
D minor key (ie all B are bB)
Every bass note last 4 beats
Verse:
D
B
D
B
B
C
Key becomes F minor (bA, bB, bD, bE)
B7 (ie this means bass bB with bD (and F) and bA)
C7 (ie this means bass C with bE (and G) and bB)
Chorus
F
F7 (ie bE added)
B7
B7
F
F7
B7
B7
B7
C7
F
F actually E bass and F harmony
B7
C7
F
Verse
Similarly
Middle eight
B79 hey girl
C7
B79
C7
B79 let go
C7
B79 and there no price to pay
Verse
Similarly
Chorus
Similarly
See also:
Bach Bass Rules - Bach, Niedt - PDF
Harmony - Piston
Sunday, November 10, 2019
Gareth Jones on recording Exciter - Depeche Mode
http://www.garethjones.com/cv/cv/keysGermany/keysGermany.html
Saturday, November 9, 2019
Blind my Mind - by Flunck
Just played on Galaxy FM radio.
There must be a nice C major 3rd major 7th chord (Do Mi Sol Si) near the beginning.
B&K studio microphones
See:
Bruel & Kjaer application notes:
The use of B&K microphones for modern recording
Signal path for the Depeche Mode vocals
Some interesting information can be found on:
anyone knows what mic Dave Gahan used on Ultra
repforums.prosoundwebs.com
some gear appearing are:
Shure SM7
B&K 4006
Neumann CMV
LA2A election tube compressor
anyone knows what mic Dave Gahan used on Ultra
repforums.prosoundwebs.com
some gear appearing are:
Shure SM7
B&K 4006
Neumann CMV
LA2A election tube compressor
Friday, November 8, 2019
Vocal double tracking and pedal bass
These 2 songs have just been transmitted by Galaxy 92 FM:
The Sun - Parov Stelar & Graham Candy
Double tracking on vocal
L' Embrasade - Monsieur Minimal featuring Ursula
Pedal bass (is bass playing La all the time?)
Double tracking on vocal
Thursday, November 7, 2019
Addition to the Pleiades Meal
At your risk. This is not a medical advice.
Addition of 100% organic cocoa powder. Criollo variety. (It is amazing what one can buy with just 3 euros).
A hint is to add the dry cocoa powder to the crushed oat flakes and other ingredients, stirring before adding the filtered water and a bit of sea water.
Together with moist oats it creates something tasting like chocolate milk.
Quality food can taste very nice too.
Marmot Mountain Works
https://www.outinunder.com/sites/default/files/Marmot%20Catalog%201977.pdf
This vintage catalogue includes information on Gore-Tex.
Top quality gears.
Just like sleeping in a warm cloud?
Monday, November 4, 2019
4 voice harmony, Air - J. S. Bach
Air on the G string (with score)
https://m.youtube.com/watch?v=E2j-frfK-yg#fauxfullscreen
A few hints to understand what is going on are the following:
The composition is in the key of D major. Ie all notes are natural except F which is F sharp.
Bach used step bass and at the same time bass moving up and down in octaves.
While the bass moves step by step other voices may remain constant creating for example prepared 7ths, 9ths etc.
Together with a 7th, 9th with respect to bass, the 3rd is added by another voice (part or melody).
For example at the beginning the violas and the violins play A D #F ie the chord D major (derived by the simple 1 3 5 rule with respect to bass D, ie D bass and D #F A).
Bass steps down the scale note by note while other parts remain A D #F. When bass becomes B the part playing A becomes B ie parts play again 1 3 5 wrt bass, the B minor 3rd chord.
Then bass keeps going step by step down the D major scale. Upper parts already play B D #F which is really looking ahead to the creation of the G B D #F chord when bass eventually becomes G. This fantastically sounding chord is therefore ingeniously prepared for the listener's brain. It is called G major 3rd major 7th, the name derived from the name of the intervals of the other parts with respect to bass.
Throughout the composition exquisite musical intervals such as 9ths with respect to bass are created in a prepared way for the human brain and another part or voice is then simultaneously playing the interval of 3rd with respect to bass.
See also:
Bach bass rules - Bach, Niedt
https://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Harmony - Piston
Revox M 3500, another mic without an LRC filter needed to reduce high frequency peak
At your risk. Take all safety precautions. Protect your hearing.
https://www.gearslutz.com/board/so-much-gear-so-little-time/462601-revox-m-3500-dynamic-mic-vs-beyer-m-201-a.html
According to above discussion the M201 uses an LRC filter to tame the high frequency peak.
(Later addition: it still has a peak, see datasheet:http://www.preservationsound.com/wp-content/uploads/2017/10/Beyerdynamic_1974.pdf)
This LRC filter can be seen in the datasheet:
http://recordinghacks.com/pdf/beyerdynamic/M201_BA_DEF_01.pdf
A similar LRC filter used inside an SM7 to create flat electrical frequency response.
http://www.coutant.org/sm7/sm7.pdf
(L is series with R in series with L is connected in parallel to moving coil output, as seen in above Shure SM7 datasheet).
It may be interesting to create a Pleiades in line Neutrik module LRC filter for the M 3500 microphone.
Les Paul
Les Paul CNBC interview 1991
https://m.youtube.com/watch?v=nw52Q1AxNRI#fauxfullscreen
Les Paul shows his guitar, omnibus
https://m.youtube.com/watch?v=BjKX0P4t_ac#fauxfullscreen
The easiest way to avoid crossover distortion is to making it all single sided - Rubert Neve
Rubert Neve - The SOS interview - YouTube
https://m.youtube.com/watch?v=jAwwsrnNdzg#fauxfullscreen
Sunday, November 3, 2019
Εκμεταλλεύονται οι πολυεθνικές η οι λιγοεθνικές δισκογραφικες εταιρίες τους δημιουργούς;
Στο προηγουμενο post στ' αγγλικά η:
The Problem with Music - Steve Albini - the Baffler
https://thebaffler.com/salvos/the-problem-with-music
The Problem with Music - Steve Albini - The Baffler
https://thebaffler.com/salvos/the-problem-with-music
Steve Albini
While watching the Capitol studios video on YouTube, dosing off, after waking up this video had come up on recording drums, mics, impedance etc by Steve Albini:
https://m.youtube.com/watch?v=kmP9z-xTRz0#fauxfullscreen
Saturday, November 2, 2019
Adopting the rights-based model: music multinationals and local music industries since 1945 - Gerben Bakker
https://pdfs.semanticscholar.org/45a9/6fd07421bf3e471587524a80524108ae3733.pdf
see also:
The Making of a Music Multinational: PolyGram's international businesses, 1945-1998 - Gerben Bakker
https://www.cambridge.org/core/journals/business-history-review/article/making-of-a-music-multinational-polygrams-international-businesses-19451998/8B937B14E2FA53109B835B2684E0B798
this has been found as reference on the Wikipedia article on PolyGram
https://en.m.wikipedia.org/wiki/PolyGram
Friday, November 1, 2019
Electron tube DF97 at low supply potential?
At your risk.
Take safety precautions.
A fuse should always been used in series with a battery for fire protection.
An dvantage of such electron tubes is the low filament current consumption, typically less than 25mA if underheating is used.
Some preliminary measurements were done today. DF96 has not been tried yet.
Supplying 1.5V at filament cathode.
Then control grid left open (at space potential).
Then screen grid used as anode electrode.
Vg2 Ig2
9V 0.1μA
18V 1μA
27V 18μA
36V 106μA
48V 350μA
Vb is approximate as 9V batteries were used in various discharge state.
Then an 8.2MΩ was connected between Vb and grid for pull up bias or Pleiades Bias.
Vg2 Ig2
9V 26μA
18V 122μA
A microphone booster amplifier such as Pleiades V6 should be possible even at Vb=9V.
See also:
Operating features of the Audion - E. H. Armstrong
Thursday, October 31, 2019
Further editing of the song Πως θα Ηταν
More additions are described in the Monday 28 Ocrober 2019 post:
https://euroelectron.blogspot.com/2019/10/updates-to-song.html
Wednesday, October 30, 2019
A very useful trick on composing music
is possibly while writing or playing to think forward in time.
For example anticipating a chord and leading towards it.
For example preparing the 7th of what would become a seventh chord.
For example the chord sequence leading to the chord of (C major 3rd major 7th):
G
C7
ie
G bass D G B
C bass E G B
(B is prepared as it already exists in the G major chord)
Another example is:
Vocalise - Rachmaninov
From the very beginning chords gradually morph to what they become.
This principle may be attempted while writting down the song Πως Θα Ηταν - Public Domain. Gabriella suggested writing it down in a simplest possible way defining harmony and leaving arrangement for later on depending on whether it may be used as a song in children's play etc. She expressed admiration for it after listening live with Vicky on female vocals and Vicky's influence on much better selected keys or musical scales for both male and female part.
It will also be tried to think of 3 or four part harmony even while writting for piano, as if scoring strings or a choir. It seems best to think of a part or voice as an individual melody, a beautiful singing entity of its own. This can ally to bass too. Air, the French band think of bass as a beautiful carpet.
See also:
Bach Bass Rules - Bach, Niedt
Cascading 2 gentle slope high pass inductor resistor microphone filters
It happened by chance while singing the song Πως θα Ηταν - Public Domain in F minor key and playing with cable crocodile clips on the recent LRC addition. Capacitor had been removed out of curiosity.
When both filters are connected, one in parallel to the other any remaining bass heaviness to nail singing voice in high register disappear.
Signal path:
male voice singing at high register - Shure Unidyne III at 2-4 in - Pleiades (130Ω,40mH) - Pleiades (150Ω,11mH) - Western Electric 1H to 4H transformer - Sony TC-D5 Pro - Sennheiser HD580
Even an inexpensive German Dynamisches Mikrofon sounded nice with this setup.
Tuesday, October 29, 2019
Monday, October 28, 2019
Stranger in Paradise - Carerina Valente
Played on Galaxy 92MHz radio earlier on today.
Based on the famous composition by Borodin.
https://m.youtube.com/watch?v=mbCJbnNDmoM#fauxfullscreen
Updates to the song Πως θα Ηταν
Updates to Πως Θα Ηταν - Public Domain:
Vicky insisting that the verse leaves something to be desired...
It has been decided by trial and error that male voice should be in a high register while female voice in a low register.
So instead of using the C minor key...
The key of F minor is used leading to a high pitch male starting note C just like The Power of Love - Frankie Goes to Hollyeood in the F minor key.
Then a modulation from F minor to G minor on next verse lets the female vocal be at a low warm register.
On chorus the relative B flat major key is used and both male and female voices can coexist comfortably.
Then a modulation to A minor can define the space for a piano solo.
Then chorus in the relative C major creates a brighter vocal from both voices.
Then a modulation from concluding E major to D major for the outro.
So in summary chord progression is in Bach Bass Rules notation:
Key F minor
intro
F
F247 (just like the a Power of Love). Or just 3 car horn notes, see end of this post.)
F
F247
verse male voice
F
C7
D7
C#3 (C major 3rd)
C9
D24 passing bass note
G minor key
Verse female voice
G
D7
E7
D
Chorus both voices
B
Fb37
C7
B
B
Fb37
C7
D45
D
D7
E24 bass passing note
modulation to A minor for piano solo and backwards playground recording.
A
E7
F7
E#3 ie E major 3rd
A
E7
F7
E#3
Final chorus in C
C
Gb37
D7
C
C
Gb7
D7
E45
E E479 ie E bass with D major E Outro in D major
D (G#FGA...melody from a previous post but starting with #G)
B7
C
A7
D
B7
C
A7
Fade out
Public Domain
Later addition:
After suggestions from Vicky on:
Perhaps having a subtle traffic car horn noise for introduction with car horns playing the first 3 notes of the intro, ie C F D.
Adding some more of the lyrics.
Perhaps pausing piano solo part...
after experimenting many times on the piano...
It is being decided to change accordingly the intro, using part 1 of sunle piano solo, then another verse, then second part of subtle piano solo in the form of high notes falling like drops of water, then chorus and outro.
The added verse will be:
Πως θα ηταν
Στην αμμουδιά να με κρατάς
Και να γελάνε απο ψηλά
Τ' αστέρια
The second piano solo part just after this verse leaves space or time for the listener's brain for imagination before the arrival of chorus.
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