Sunday, December 31, 2017
How would B&O Beoplay A1 sound with a Pleiades A1 power amplifier?
How would it sound with just one 2N3055 transistor driving the speaker? One bias resistor from collector to base? The speaker itself being the collector load (See the Pleiades power amplifier). Perhaps also adding a CD player too since the shape is so like a portable CD Walkman?
This low power Pleiades amplifier operating in class A (electrons flowing all the time) has been tested with typical Sony APM 2 way speakers and it sounds fantastic. Not louder than real life but as natural and as life like as real life.
Wireless signal tracer
At your own risk. Only qualified personnel.
How would it be to have a small signal tracing probe that transmits?
And a B&O type amp that plays what is traced.
Would it make fault finding with style? All precautions should be taken when opening equipment. Only qualified personnel.
Careful with MDF furniture Προσοχή στα έπιπλα απο MDF
Make a search on how MDF is made and whether it affects the respiratory system. Careful for example if a bed, your bed or your child's bed is made of MDF. Cheap furniture can prove very expensive to health.
Κάντε έρευνα απο τι φτιάχνεται η κόλλα του MDF. Προσοχή αν το κρεβάτι σας η του παιδιού σας ειναι απο MDF. Το φθηνό έπιπλο μπορεί να ειναι πολυ ακριβό στην υγεία.
Δεν φταίνε απαραίτητα οι εταιρίες, εμείς έχουμε την ευθύνη της υγείας μας. Ερευνούμε λοιπόν.
Saturday, December 30, 2017
Pleiades power amplifier continued, Ο τελικός ενισχυτής Πλειαδες, συνεχεια
Your own risk.
Trying to tidy it up in a box instead of crocodile cable clips in all directions on the floor.
It sounds amazing connected to a Sony 2 way APM speaker. On these speakers, the tweeter (paper cone snall speaker) is first order connected ie with just a series capacitor. A modern Philips ribbon tweeter oak wood speaker has not been connected yet.
All in all just 7 components including speaker?
2N3055 power transistor with HEATSINK.
10KΩ biasing resistor
9V battery
Fuse
Speaker
4.7KΩ log potentiometer with
Switch
The speaker is OTL (output transformer less) connected to the collector as collector load. About 300mA pass through it and it seems to operate fine.
HEATSINK is important to minimize the chance of thermal runaway.
Rb=10KΩ is connected from collector to base.
The 4.7K pot is connected as variable resistor, rheostat, in series with the base. Only 2 terminal of the pot have been connected.
On the other side of it, it is connected to the CD player. The more the pot is turned clockwise the more the CD player line out is loaded and bass responce drops. This is presumably because there is a series output capacitor used for blocking DC. This bass drop may be useful for compensating the equal loudness ear brain frequency responce curves also called Fletcher Munson curves. Otherwise the frequency responce of the Pleiades amplifier tends to 0 Hz as there is no coupling capacitor from power transistor to speaker. Even the quiescent current passes through the speaker.
So everything is in class A (electrons flowing all the time) and the amplifier sounds amazing and much louder than it's very small power output suggests. The mid band is a joy to hear and the high frequency detail unbelievable. Bass is excellent.
Everything is to be put including speaker and input connectors in a small cigarette like box.
It is a mono block amplifier so both channels a fed to it. The singer and instruments come from a nearly point source giving the illusion that they exist in the room.
It may be nice to make this amp to an active speaker on a beautiful box like those designed by Jacob Jensen for Bang and Olufsen (B&O). Or a self contained music (un)boom box player.
Setup, signsl path:
Dionne Warwick definitive collection CD, Arista - Sony Poportabke D-EJ758CK CD player line out - Pleiades power amp - Sony APM-078 speaker - reverberant room - listener's ear-brain
Reference:
2 transistor miniature AF Amplifier - K. Jones - page 41 - Audio Amplifiers - J.R. Davies editor - Data Publications LTD LONDON
Thursday, December 28, 2017
Η Κανελινα, ποιο μνημόνιο και οι σοφοί γλάροι
Ειναι χειμώνας. Τοςο ωραίος και ο χειμώνας.
Η Κανελινα έβαλε τα κλάματα γιατι άκουγε παλι για το μνημόνιο χωρις να πολυ καταλαβαίνει τι ειναι.
Έτρεξε στην παραλια, στους σοφούς γλάρους να την παρηγορήσουν. Εκει είταν και ο μακροβουτηχτος κορμοράνος. Και αυτός σε έναν βράχο που εβγαινε μεςα απο το νερό. Μόλις είχε κανει τεράστιο μακροβούτι και έφαγε πολλά ψάρια, έσκασε. Είχε ανοιχτές απλωμένες τις μαύρες μεγάλες φτερούγες του για να στεγνώσουν απο τον ήλιο.
Μόλις άκουσε για μνημόνιο λύθηκε στα γέλια. Τοςο γέλιο που για να τον σταματήσουν έπρεπε να του δώσουν φάπα.
Η Κανελινα σκούπισε τα δάκρυα της.
Οι γλάροι ειπαν ήρεμα στην Κανελινα οτι δεν εχει αλλάξει τίποτα γι αυτούς. Παλι ειναι στον βράχο τους και οταν θέλουν βουτάνε λιγο για να πιάσουν κανα ψάρι. Και ο Ηλιος βγαινει καθε μέρα. Και αυτο δεν μπορεί κανεις να το αλλάξει.
"Για το μνημόνιο μάθαμε απο το ραδιόφωνο. Αλλα τώρα δεν ακούμε πια ειδήσεις γιατι ήρθε ενα μεγάλο κύμα στο βράχο, βράχηκε το ραδιόφωνο και χάλασε. Και ετςι γλιτώσαμε."
Το μονο που μας χαλάει λιγο ειναι το πετρέλαιο. Αλλα σιγα σιγα με την εντροπία μεςω διαχυςης καθαρίζει απο την καθαρή Μεσόγειο.
Η Κανελινα πετάχτηκε απο την χαρά της.
Φώναξε τον γάτο με την πραςινη κορδελα, την υπομονετική χελώνα και τον λεπτό γέρικο σκύλο.
Και όλοι μαζι χόρεψαν και τραγουδηςαν κατω απο τις λαμπερές ακτίνες του Ηλιου που δεν αφηνει καμια σκια στην αλήθεια.
Wednesday, December 27, 2017
On how lust cultivation helps increasing profit, not for you
Roughly translated from Hellenic from the previous euroelectron post.
Even the hope that something will be acquired may make you unfree.
Advertisement full of body image. Even ballet. Lust for something far away that if you had you may not have wanted.
Paid making love may help somebody being free from the above.
This may be the reason why it is accused by all that have interest in you being controlled from the inflated lust of flesh.
Religion, possibly the greatest public relations campaign on the planet is an ingenious concept.
Perhaps from the above we can see that: Part of the energy from the sun that any person gathers is in turn taken by a nicely controlled machine. In the form of collecting money from you too.
Nevertheless we must not accuse those who setup the machine.
Whether you fall to the trap or not just depends on you. On your freewill.
References:
Enchiridion - Epictetous
Fringe Knowledge for Beginers - Montalk
Και μονο με την ελπίδα οτι θ' αποκτήσεις κατι σε κανουν οτι θέλουν
Ετςι και η διαφήμιση με την εικόνα. Ιςως μέχρι ακομα και το μπαλέτο. Πόθος για κατι μακρυνο. Που αν το είχες θα το απομυθοποιούσες.
Ο πληρωμένος ερωτας απο την άλλη μερια βοηθά στο να ειναι κανεις ελεύθερος απο τα παραπάνω.
Ιςως γι' αυτο πολεμαται οπο όσους έχουν χρηματικό συμφέρον να ελέγχεσαι απο τον μεγενθυμενο πόθο της σάρκας.
Με το αζημίωτο.
Η θρησκεία, η μεγαλύτερη ιςως εκστρατεία δημοσίων σχέσεων στον πλανήτη ειναι ιδιοφυής σύλληψη.
Τελικά καταλήγει μερος της ενεργειας απο τον Ηλιο που αξιοποιεί καθε άτομο να μαζεύεται απο μια καλοστημένη μηχανή. Με τη μορφή χρήματος και απο σένα.
Δεν πρεπει ομως να κατηγορούμε όσους στήνουν τη μηχανή. Τη δουλειά τους κανουν.
Το αν θα πέσεις στην παγίδα εξαρτάται απο την ελεύθερη σου βούληση.
Πηγές:
Εγχειριδίο - Επικτητος - Απαντα τόμος 5 εκδόσεις Κάκτος
Frindge Knowledge for Beginers - Montalk - free PDF
Tuesday, December 26, 2017
Should a gate resistor be connected to the Pleiades K117?
Is a possible voltage build up on the gate of the K117 JFET enough to blow the secondary of a mic transformer?
Caution should be exercised. It seems wise to short circuit the gate to ground before connecting the mic. An MD21 HN microphine is now with an open circuit secondary? If this is the case could this be the cause?
Or including a gate resistor in the circuit.
Sunday, December 24, 2017
Uher 4200 Report, the best tape recorder?
Uher 4200 report.
What more could one ask for.
Minimal class A (electrons flowing all the time) signal path, descrete components, no ICs.
1/4in full track stereo, 7.5 ips (inch per second).
Beautiful and small.
Portable, lightweight.
5 C type battery powered with no DC to DC converters.
Motor servo control.
Excellent stability of speed.
Service man's paradise.
What a sound.
Treble extended and smooth like silk.
How would it sound with Pleiades mic prepreamps?
Signal path, setup:
(Master BASF tape recorded with Grampian ribbon mics - Sowter 1:20 transformers - Ferrograph series 6) - playback on Uher 4200 report with one channel not operating yet - Realistic disco mixer fed from 1 channel tape out and set to mono - Sennheiser HD 580
A simple exercise for learning music
The teacher gives a note (the bass or base) and the student adds the 3rd and 5th.
For example the teacher says G (Sol) and the student says of plays G B D, (Sol Si Re).
By this simple game all the basic seven chords are learned with which most of the music is composed.
Whether there will be flats of sharps it will all depend on the scale of the musical piece.
Reference:
Bach bass rules
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Powering electronic equipment that have been stored for long
At your own risk.
For example electronic battery organs.
Inserting the batteries and when the last one is connected, it is disconnected immediately. This avoids destroying the electrolytic capacitor which may be in parallel by charging it too quickly after it was discharged for so long. Electrolytic capacitors have memory. We have to give it time for the dielectric inside to reform.
After playing with the last battery in and out for a while...
When all batteries are in the switch must be pressed momentarily in and back to off to protect all the other electrolytic capacitors in the instrument.
After waiting for a few minutes. Back to on for a little longer etc.
If a synth like a Siel DK70 is to be powered by an external cable a series resistor of 10Kohm can be connected to slowly reform the shunt capacitor.
On tube equipment a 1 Megohm series resistor can be used to slowly reform power supply capacitors by taking all safety precautions. See other euroelectron posts by Google search.
Tuesday, December 19, 2017
A Hellenic musical piece with many 7ths Ενα ελληνικό μουσικο κοματι γεμάτο έβδομες συγχορδίες
Το Αγκίστρι - Χατζηνασιος
The Hook, Agistri - Hatzinasios
Music from the film of Klearhos Konitsiotis
Seventh chords of most kinds. The 3rd minor with 7th. The 3rd major with major 7th. 4ths you name it.
https://m.youtube.com/watch?v=TZqeQO65gzM
https://m.youtube.com/watch?v=WeGOYqDbGmY
Reference:
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Ενα ελληνικό κοματι με μεγάλες έβδομες
Επιμένω - Κυριάζης
Γραμμένο σε Σι ελασονα. Εχει συχνά μπαςο Σολ με Φα διεση στα μπουζούκια, αρα Σολ μεγάλη έβδομη.
Sound engineer: Πάνος Μποθος
Learning music yourself
1 make sure the food you eat is of the best possible quality.
2 the melody or right hand on keyboard can be learned by trial and error (ear brain judging) as everything in life.
3 the bass or left hand similarly. It is much more difficult. But if it is not C (Do) it will be D (Re). If it is not Re it will be E (Mi) etc. Not as tedious as it sounds, the notes are only 7.
4 if we find out the scale or key of the musical piece then everything, including sharps, if a chord is minor or major etc will take take of itself.
5 when we find the bass at a particular moment in time the basis chord will be defined by the simple rule 1. 3. 5. Example, if the bass is D the chord will be D, F, A.
6 as we progress by the analogy of flight hours we can begun using more so distracted code. For example D9 meaning, D bass, D, F, A, E.
7 when we begin understanding the manual of Bach we have already mastered most of the art of music.
Exercise: practice the above while simultaneously listening to the original version of Careless Wisper - George Michael (in D minor).
Reference:
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Πως να μάθετε μουσική μόνοι, μονες σας
1 φροντίζουμε να τρώμε την καλύτερη σε ποιοτητα τροφή.
2 το δεξί χέρι μπορούμε να το μάθουμε παίζοντας μια μελωδία και διορθώνοντας τα λάθη μας με το αυτί - εγκεφαλο.
3 το αριστερό χέρι η μπαςο με δοκιμή. Αν δεν ειναι Ντο θα ειναι Ρε. Αν δεν ειναι Ρε θα ειναι Μι κτλ. Δεν ειναι τοςο δύσκολο οςο φενεται. Οι νοτες ειναι μονο 7.
4 αφου βρούμε το μπαςο για καθε χρονική στιγμή οι απλές συγχορδίες προκύπτουν απο τον κανόνα 1, 3, 5. Πχ αν το μπαςο ειναι Ρε, η συγχορδία ειναι Ρε, Φα, Λα. Αν γνωρίζουμε σε ποια κλίμακα ειναι γραμμένο το κοματι, τα παντα, διεσεις, μινόρε η ματζορε προκύπτουν αυτόματα.
5 καθώς προχωράμε μπορούμε να χρησιμοποιούμε πιο εκλεπτυσμένο κώδικα. Πχ Ρε 9 ειναι Ρε, Φα, Λα, Μι.
6 Μαθαίνουμε απο τα λάθη μας οπως το παιδι που μαθαίνει να μιλάει η να περπατάει.
7 Αν αρχίσουμε να καταλαβαίνουμε το εγχειρίδιο του Μπαχ προς τους μαθητές του ειμαςτε ήδη σε επίπεδο κοντα στον σημαντικοτερο ιςως συνθέτη που γνώρισε η ανθρωπότητα.
Άσκηση: δοκιμάστε τα παραπάνω ακουγοντας ταυτοχρονα την αυθεντική εκτέλεση του Careless Wisper - George Michael (σε κλίμακα ρε ελλασονα η ρε μινόρε)
Πηγη:
Το εγχειρίδιο Μπαχ:
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Sunday, December 17, 2017
Why do mono radios sound do good?
And they can be anywhere in the room, the listener anywhere, it's a perfect localization.
The radio becomes a musical instrument on its own.
Is this what is meant by the great music companion under the pillow? People still remember it.
Voice for example coming from one point in space just like real life.
If the amp is really good, for example class A (electrons flowing all the time) the result is fantastic. For example a Dansette record player with its class A electron tube single ended amp. Perhaps nothing can beat it. Mike Oldfield had a Dansete when being a kid (BBC Tubular a Bells documentary?).
You can even have your back at a mono source. It still sounds fantastic. You can even be at a different room at the sound is still so natural.
More on the previous euroelectron post.
Portable amplifier speaker
Mono active speaker at amazing sound quality for playing music in any room by connecting your playback device.
Single ended class A.
Single ended at a few watts can sound fantastic and loud. With warm sound, fantastic treble, midrange, bass.
It is no coincidence that such transfer characteristics (low distortion at low level and gradual distortion at higher signal amplitude) are used in mastering for consumer records or radio, YouTube etc.
They give a high average level.
The amp speaker can be mono. Just like a pebble thrown on a lake. Great definition, warm sound, excellent localization. Excellent 3D virtual effect as the brain localizes naturally the source at any position of the listener in the room.
If using stereo and the listener is not equidistant from the speakers then 2 Madonnas for example are heard, one at each speaker which is unnatural.
The Pleiades amp speaker signsl path is very simple. Just a transistor. A biasing resistor from collector to base. The speaker directly connected to the collector. A battery with fuse. See a previous euroelectron post for full description of the Pleiades power amplifier. A high quality 2 way or 2 way coaxial or full range speaker can be used.
Low power consumption. The sound quality is such that even 1 or 2 watts power output may be enough. Or because of it or class A?
If the 3D effect is to be upgraded perhaps more such amps may be used one for each instrument. Great for learning music.
But even 1 speaker amp sounds amazing with all channels sent to it.
The excellent localization sounds warm, untiring and aid the brain to concentrate at a cocktail party. One could concentrate at music or discussion more easily without the music atmosphere being obtrusive. (The Cocktail Party effect may operate more effectively).
If a stereo amp for example is sending to 4 speakers in a living room the sound is thick and unclear. Like throwing 4 pebbles on a lake.
The concept of a mono reproduction came about from the little kid Ionas inquiring why 2 speakers?
Outdoor venue where (non vegetable fat palm oil) croissants are baked with solar oven
Vegetable fats, palm oil fats have a reputation of cloging blood arteries.
So what to use, the best butter made from milk as it is used by the best pâtisseries of Paris? For example Angelina, Pierre Hermé.
Orchestre Solaire
An orchestra where instruments are powered in real time by photovoltaic cells.
It can be portable battery powered keyboards, synths, amps etc.
Do it yourself Pizza Restaurant
Clients learn how to make their own pizza from flour.
Similar idea to those places where you go and wash yourcar yourself.
Thursday, December 14, 2017
It is not that hope forgets us...Δεν ειναι οτι η ελπίδα μας ξεχνά...
it is up to us to remember her
εμείς αποφασίζουμε να την θυμόμαστε
The sun above us.
Ο Ηλιος ψηλά.
Reference, πηγη:
The film: Shawshank Redemption
Η ταινια: Η τελευταία έξοδος της Ριτα Χειγουορθ
Wednesday, December 13, 2017
Η ευτυχία...Hapiness...
δεν ειναι μπροστά μας ούτε 10 βήματα.
is not in front to be reached.
Ειναι διπλα μας.
She is sitting next to us, anywhere.
Tuesday, December 12, 2017
A simple recording setup of excellent quality
Signal path:
Grampian GR1/L, 25-50Ω ribbon mics Blumlein Pair - Sowter 3104, 1:20 stepup input transformer for each mic (3.9 Henries to 470 Henries) - Ferrograph series 6 electron tube or valve reel to reel recorder at 7.5 ips
The Blumlein pair should have been in the middle of the room.
A cover of Supertwister - Camel was played.
The number of active amplifying devices from the musical instruments captured in the room by the mics to the recording tape is 3 electron tubes only. And a similar number for playback from tape, electron tubes, if for example played back on a Ferrograph, or transistors if for example played on a Uher.
The electric bass was connected to an electron tube amplifier to possibly 4 full range speakers connected in series parallel combination, mounted on an open baffle.
A WLM organ (from Finland) was connected to a PCL86 single ended class A electron tube power amp. The amp schematic from the excellent French data book Radio Tubes. The output transformer was made by Hammond manufacturing in U.S. The speaker was a rotating vintage ALNICO magnet full range mounted on an open back small cabinet and hanged from the ceiling for free rotation or Doppler effect, (Pleiades speaker).
Acoustic drums.
The Sowter transformers were used to match the low output and impedance of the excellent Grampian ribbon mics to the 1 MΩ ECC83 mic input of the excellent Ferrograph series 6.
Creamy smooth sound, no hiss.
Tape running at 7.5 ips.
At the time the heads were 1/4 track.
It is great using the same technique in modern recorders.
For example:
Moving coil mic or ribbon mic - input trasformer - electron tube or JFET prepreamp - any recorder
See the Pleiades V series battery electron tube prepreamps or the Pleiades JFET K117 prepreamp.
At the time nothing was known for the membrane bass absorbing panels, (Pleiades broadband absorbers). Nothing was known about the influence of the input transformer primary inductance on adjusting for bass proximity effect. Nothing was known that mics can be fairly close and compensating for bass increase. This recording was payed back after all those years on a Uher 4200 with just one channel operating and with mono bridged HD-580 headphones. Not tested yet with speakers, it might not sound good due to excesive room sound. But this particular recording made before 2000 sounds balanced, clear and warm. Might or might not send ordinary analog multitrack 24 channel recording with console mixing (adding more correctly) (complex signal path) to the cleaners.
Monday, December 11, 2017
Music is Language
Not Janguage, Kanguage.
First you learn to play and then you learn to read and the theoretical part which is grammar.
Same as a baby being taught language. First learning to speak, then how to read, then grammar.
Supertwister in reverse (Even if the tape plays backwards the chord progression is preserved)
Supertwister - Camel, playing backwards, back in time, reversing the arrow of time, playing tape backwards.
The chords remain the same? as they have the pattern:
1 2 3 2 which repeats like a loop.
So
1 2 3 2 1 2 3 2 1 2 3 2
So backwards the brain remembers G7 (G minor 7th) which is the first chord. When played backwards the brain gives it again the first position and reading backwards the pattern we can see it still is:
1 2 3 2 1 2 3 2
This happened of course by accident by playing the tape in a wrong way.
The code of the piece (where the flute solo begins) is:
G7 A7 B7 A7
Since the piece is written in D minor which has B flat the code gives:
Gm7, Am7, Bbmaj7, Am7 (see reference).
It should sound interesting played backwards, chords the same, and reverbs, atacks etc out of space.
In fact the tape played wrongly was a cover version recorded direct to tape with 2 Grampian ribbon mics, a pair of Sowter 1:22 stepup transformers, and a Ferrograph series 6 (valve) electron tube 7.5 ips real to reel (real to real!) tape recorder.
Reference:
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Pleiades snack 2
Your own risk.
With barley rusk, dryied nettle, fresh lemon juice, fresh lemon jar, black raisins, goji berry, whole grain sesame, sliced carrot, virgin olive oil, freshly ground pepper.
Sunday, December 10, 2017
A great song
There's an end - The Greenhornes
Best to listen without images, closed eyes etc as most images seem to be designed to make us feel down. And they are also designed to be a magnet. Also closing eyes lets us perceive more of the music.
One may listen to the guitar doubling the bass. The backing vocals almost doubling the bass.
The great intonation. (Voices so in tune).
How the vocal is towards the low limit in frequency a woman can sing. The singer sings the notes of a bass or a baritone that sound an octave above since it is a female voice.
Possibility of using varispeed to make the voice more fresh.
How the backing vocals begin one octave above the vocal.
How the backing vocals are double tracked and assigned or paned to the left and to the right channel.
The great vocal recording.
The relatively lack of drum reverberation, room broad band absorbers etc?
The great mix or balance, for example the acoustic guitar is so low in level that it can mostly be felt rather than heard.
A very interesting interview of Quicy Jones
https://www.mixonline.com/recording/mix-interview-quincy-jones-365878
Interesting information on It's My Party - Leslie Gore including microphones
http://www.songfacts.com/detail.php?id=3572
A great recording engineering technique used by Madonna on vocals
Double tracking.
More than one Madonna singing as exactly as possible the same part.
An example is To Have and not to Hold from the album Ray of Light.
Other examples of this great sounding technique are Beach Boys songs, Time - Alan Parson's Project, It's my Party - Leslie Gore, Society's Child - Janis Ian, etc.
https://m.youtube.com/watch?v=ABUmZvzGHVc
It is also used in classical music. For example many violins playing the same part. Similarly with many violas, many cellos etc.
It is amazing what just one note can do and how nice it can sound.
And of course we can have the same part played by 2 different instruments creating the tone color of a non existing instrument.
Or octaves, double octaves etc. For example the bass and harpsichord playing the same melody at the intro of Society's Child just before Janis Ian begins singing her double tracked part.
On It's my Party, Leslie Gore recorded on the same magnetic tape track by the engineer disabling the erase head. At the risk of ruining the already existing performance if something had gone wrong. See The book of Phil Ramone who recorded the second pass of the voice.
Mike Oldfield used similar erase disabling techniques by modifying a Bang and Olufsen reel to reel tape recorder to record his demo of Tubular Bells. If memory is correct he also used transparent tape to cover the erase head? More information can be found by searching on the web.
Reference:
Making Records - Phil Ramone
Notes are 7
And musical notes are still musical notes no matter whether played on a piano, miniMoog, electric bass, violin, glockenspiel ...
Great music has always been using great harmony code.
References:
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Turning on the radio. In almost any country. Listening, playing along and analyzing how most hit music of any period or any genre is using harmony code very similar to Bach or Niedt. See above reference.
Everything that seems unquestionable has space to be wrong
For example stereo vs mono reproduction through a single loudspeaker in a room.
The little kid Ionas asked why 2 loudspeakers?
There seems to be much music material where the single speaker fed by a mono signal or the sum of left and right sounds exceptionally natural.
Back to mono? Part 2
Do mono radios sound more natural.
Just one loudspeaker is equivalent to throwing one stone in a lake.
Throwing 2 stones creates a complex pattern.
Saturday, December 9, 2017
Moi Lolita - Alizee and Bach's prepared 9ths
Bach in his Niedt music manual refers to prepared 7ths, 9ths chords etc.
What does prepared mean?
These intervals are considered dissonant if heard or played abruptly. But if the brain is prepared for the interval to come they sound miraculously good.
Example of preparing is having the melody play an F sharp before bass E comes with F sharp to create the E 9th chord. For example Moi Lolita - Alizee written in B minor and produced by Mylène Farmer and Lautent Boutonnât.
Prepared 9ths come many times in this song. The best way to identify them is to play with the left hand (just on the left of the melody) the chords or bass and on the right hand the melody.
The bass derived chords are B, G, E, A in a loop. Of course every C and every F is sharp as the scale is B minor.
An obvious point is at 0:42. "Fou" is F sharp or FA#. "Qu'un" is F sharp too now with bass E to create the fabulous sounding 9th interval.
0:44 is great too as the end of the word phénomène is C sharp. There is sudden pause at the end of the word and the bass immediately goes B giving the great taste of 9th (B 9) as the C sharp reverberates in our conscience or perhaps by the vocal reverb.
Another example of prepared 9th is on Society's Child - Janis Ian. At 1:07 the organ plays a tremolo E which is sustained and then the bass becomes D creating with E and interval of 9th. At 1:08 the organ E note is resolved to D.
https://m.youtube.com/watch?v=ABUmZvzGHVc
Another example of preparation is the melody descending by semitones or approaching from both sides the note to create the 9th interval. For example the music from Last Tango in Paris - Badbieri
https://m.youtube.com/watch?v=pq2kmegOWtE
The melody plays C, B, B flat, A with bass G and the 3rd from bass (B flat) added to make it sound superb.
The first technique can be seen in Mass in B minor - Bach.
The techniques can be studied by listening and watching carefully the score.
Examples are 0.14 one of the voices singing F sharp prepared and the bass E arriving. Or at 1:27.
https://m.youtube.com/watch?v=y-18Jup0m0U
Another great interpretation of this masterpiece is the one conducted by Karl Munchinger, Stutgart chamber orchestra.
References:
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Mass in B minor - Bach - Dover publications
Harmony - Piston
Μήπως οι θερμίδες ειναι αςχετες με το αν παχαίνει κανεις; Are calories irrelevant to weight gain ?
Με δικη σας ευθύνη. Your own risk.
Calory is a unit of energy just like Joule, Volt-Ampere VA or Volt times Ampere, KWHour etc.
Οι θερμίδα ειναι μονάδα μέτρησης ενεργειας οπως το Joule, Volt-Ampere VA η volt επι ampere, KWHour etc.
Μήπως το ποσο συχνά κανεις πηγαίνει τουαλέτα ειναι πιο σημαντικο;
Is the frequency one goes to the toilet more important?
Top quality food, for example whole grain tahini, whole grain sesame has calories but seem to keep the body healthy and beautiful. Is it a coincidence that this top quality food is chosen by monks and photo models?
Τροφή υψηλής διατροφικής αξίας οπως το ταχίνι ολικής, το σουςαμι ολικής έχουν θερμίδες αλλα απο οτι φενεται κρατάνε το σώμα υγιές και όμορφο. Ειναι τυχαίο που αυτη η τροφή προτιμάται απο μοναχούς και φωτομοντέλα;
Should we be careful when reading vegetable oil at the food packaging ingredient list since they have a reputation of cloging blood arteries?
Μήπως πρεπει να προσέχουμε τα φυτικά λιπαρά στη συσκευασία τροφών που έχουν τη φήμη να φράζουν τις αρτηριες αίματος;
Reference:
Fringe Knowledge for Beginers - Montalk
Ειναι το ασφαλτοπανο πιςω απο τις ηχογραφήσεις φωνής του Εμινεμ Eminem
Στο διπλανό χρονικά euroelectron post η με Google search: Eminem, roofing felt, euroelectron blogspot
Is roofing felt the bass absorber where Eminem records vocals?
To investigate on this the following areas have to be examined.
The fact that BBC and EMI used flat sheets of elastomer roofing felt in their studios to convert bass reverberating frequencies to heat and therefore create extremely clean vocal recordings.
The fact that Bill Putnam is behind the design of the studio where Eminem records. Bill Putnam was making flat panel absorbers as can be seen in Beach Boys and Mamas and Papas vocal recording photos. Was he using roofing felt as the elastomer heat dissipating material?
References:
Acoustics of radio and television studios - Gilford - BBC
Information that can be found by Google search on Bill Putnam, Ocean Way, Wikipedia,
Pet Sounds - Beach Boys back cover etc
http://www.aes.org/aeshc/pdf/putnam_history-of-recording-studios.pdf
Link found from http://www.aes.org/aeshc/
AES historical committee
Friday, December 8, 2017
How to correctly connect a world class dynamic microphone to Uher 4000, 4200 report
Please search on google for an earlier euroelectron post titled Uher 4200 report powering an electron tube preamplifier.
Thursday, December 7, 2017
Πως να μάθουμε όλες τις μείζονες και ελασσονες κλίμακες ευκολα
Στα δυο διπλανά euroelectron posts στ' αγγλικά.
How to easily create any minor scale
Same reading as the next post in major.
All we need to remember is the A minor key which has all the keys white.
A B C D E F G A
The structure is:
Tone semitone tone tone semitone tone tone
How to learn all major scales easily
All needed to be remembered is the C major scales which has all the keys white.
C D E F G A B C
By looking at a keyboard instrument we see that it's structure is
Tone tone semitone tone tone tone semitone
So we use the same structure for any scale.
Example A major
A B C# D E F# G# A
General reference:
Musical Acoustics - Donald Hall
Wednesday, December 6, 2017
Why the more cold it makes the more dawn insulation protects us
Static electricity?
Cold weather is more dry as by definition low temperature means low mean thermal motion of molecules. So water molecules escape less as they have less mean velocity. This means drier air.
Dryer air is a bad conductor of electricity . So high voltage can build up by friction etc.
Static electricity means that dawn loft have the same polarity of electric charge. So they repel each itself and each other.
Repulsion creates expansion.
Your dawn jacket or sleeping bag expands and traps more air which is a good insulator of not only electricity but heat too for the same reason. Great makers of such is Marmot, Vaude etc.
So you stay warm.
Nature and all the animals that use such techniques know.
Uher 4200 report powering electron tube preamplifier
The UHER power supply mic connector provision (power coming for the internal batteries) can be used to power an electron tube 7.5V anode voltage pre preamplifier.
Example an ECC82 (12AX7) double triode electron tube (Pleiades V0 series). Each half can be used for each channel. The anodes operate greatly with 7.5V by biasing from plate to grid with a 4 Megohm electron accelerating resistor. The heaters can be in series and underheated to 7 volts instead of 12V. This will make the electron tube further low noise, perhaps at the limit of nature. A similar underheating technique is used on possibly the best microphone ever on the planet, favorite by Madonna, Sinatra, Beatles etc, the Neumann U47 with the internal VF14 tube underheated for low noise and high resolution.
Or 2 EF183 electron tubes can be used connected as triodes, example the Pleiades V4.
Example mics are Sony F-96, Beyer M55 H N, Sennheiser MD421 HN, MD441, Electro-Voice RE15, RE16, Shure Unidyne III.
[Why an electron tube or JFET front end amplifier?
They are high impedance giving an open sound with big midrange and extended high frequency perception.
Low Z direct connection to transistor sounds nice but the sound seems restricted.
The electron tube drives the transistor input stage with a big low noise signal. This increases subjective loudness, signal to noise ratio. The singer or actor can sing or speak at a very comfortable natural unforced voice and the magnetic tape modulation can be deep.
So far this has been tried on Marzntz MD430, Sony TC-D5M, Sanyo MR-410 with great results, big and natural sound quality and almost complete absence of hiss. The limiting factor being usually the recording environment acoustic noise level.
A problem is possibility of transient clipping of the following stages.
It is hoped this will be absent on Uher running at 7.5ios.
Such a simple front end stage is present on condencer or electret mics next to the capsule.
So why not also give world class studio moving coil microphones the treat they deserve? Less expensive mics can sound amazing too as we know from discography. For example Sade, Bono U2 using the SM58 on studio vocals or Stevie Nicks Fleetwood Mac using the more expensive MD421 or MD441.]
Input transformers can be used for stepup and low noise and for compensating the proximity effect and electromagnetically damping pop and wind noise. Ribbon microphones can be used too.
Some of the above mics have high impedance versions as they have the input transformer inside them. This further simplifies things. And all one then needs is an ECC82 and 1 or 2 resistors and capacitors for top quality studio sound.
Another option is using a JFET prepreamp like electret condenser microphones do. An example is the K117 JFET, Pleiades K117 prepreamp.
Also many microphones can be connected to the input transformers in series - parallel combinations. This may produce direct to stereo or mono recordings of unparalleled noise performance and sound quality, punch and loudness.
Reference:
On preserving the transconductance of electron tubes at anode potential as low as less than 6 volts - euroelectron blogspot
Tubes vs Transistors, is there an audible difference? - Russel O. Hamm - JAES
Shelley Yakus - Production Viewpoint - interviewed by Robbert Carr - Vintage King Audio
https://vintageking.com/media/article-archives/pdf/shelly-yakus.pdf
Is there a winning formula for women?
It may well be a high giving to asking ratio.
The more one gives and the less he asks.
The extreme scenario where the ratio tends to infinity is giving all and asking nothing.
Giving has nothing to do with being money rich. It could be giving a true compliment.
And there is nobody or nothing to make you sad anymore as you have already said to the most beautiful woman in the world how beautiful she is.
Monday, December 4, 2017
Uher 4200 Report
A very beautiful discrete transistor reel to reel tape recorder.
Small.
Lightweight, only 3kgf.
Easy for servicing.
German engineering.
Goes up to 7.5ips.
Goes up to 20KHz.
Battery operated.
No tone controls.
No Dolby.
Stereo, 2 track 1/4in.
Discrete transistor with minimal signal path.
How would it sound with studio quality moving coil microphones and Pleiades pre preamplifiers?
Why cats do not eat bread, Γιατι οι γάτες δεν τρώνε ψωμι
It may be because they can sense by instinct the artery clogging palm oil with which the dough is made. Ιςως γιατι μπορούν απο ένστικτο να ανιχνεύσουν το αρτηριοφρακτικο φοινικελαιο με το οποιο φτιάχνεται η ζύμη.
If they are given top quality whole bread made with no oil they will eat it like crazy.
Αν τους δωθεί ψωμι ολικής αρίστης ποιότητας φτιαγμένο χωρις λάδι θα το καταβροχθίσουν.
For us humans it is possibly very important to read the small letter ingredient list of everything before it enters us. Για εμάς ειναι πιθανότατα πολυ σημαντικο να διαβάζουμε τα συςτατικα με τα μικροσκοπικά γράμματα για οτιδήποτε πριν μπει μεςα μας.
Saturday, December 2, 2017
The Pleiades Snack
The base is a moistened barley rusk with filtered water. Cretan barley rusks made by Fanourakis are great.
Walnut pieces are added.
Black raisins.
Aegina island pistachio nuts.
Whole grain sesame seeds.
Goji Berries.
Virgin olive oil is added on top.
A bit of whole grain tahini.
Ceylon cinnamon.
Ready.
Could it also be made with pita bread made by barley or barley pan cake?
Could it be made as a sweet pita bread souvlaki?
A Great example of prepared 7th chords
The Great Gig in the Sky - Pink Floyd
https://m.youtube.com/watch?v=cVBCE3gaNxc
For example:
The left hand plays B flat while the right hand A D F. The D is kept to become the major 7th of the next chord:
The left hand plays E flat while the right hand plays B flat D G. The D is the major 7h (distance from bass) and the G (3rd from bass) is added.
The chain goes on similarly for the following bass notes.
A similar idea of preparing sevenths and adding the 3rds can be listened to or played on Confutatis - Motzart on the women choir sections.
References:
The Dark Side of the Moon - Pink Floyd - Piani Score
http://normanschmidt.net/scores/bachjs-general_bass_rules.pdf
Making Bread Quicker
Alexandre said that now we know that the dough must be stretched many times. Like rubber bands. This will make the dough rise. It is the protein gluten that need to be stretched. We do the opposite for making croissants. We do as less work on the dough as possible.
See also:
https://en.m.wikipedia.org/wiki/Gluten
Friday, December 1, 2017
Variable Pleiades microphone proximity compensating filter, transformer?
Please see the next euroelectron post on the Stanley induction coil.
The induction coil, one of the greatest inventions of all time
Induction Coil - W. Stanley, JR
Patent number 349,611
It would be nice if the screw that adjuncts the air gap is used for variable compensation of the proximity effect.
This would make a variable focusing microphone distance adjustment
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