De emphasis curve for flat frequency response from artist's brain to listener's brain

Considering the whole system, ie signal path...


Since flat frequency response from artist's to listener's brain is desired could a new de emphasis curve be specified?


Finer adjustments according to Fletcher- Munson, effort curves can then be made with further EQing.


But the idea is getting as much of EQing needed in the first place to simplify the system as much as possible.


This means minimum of components from mic to A to D converter or to an analog reproduction amplifier in case of live music PA for example.


The low cut de emphasis will round peak limited waveforms thereby increasing the average signal and put less demand to the  A to D converter in the case of digital recording, power amplifier in the case of live PA etc.


An example implementation could be a smaller inductance Pleiades (low cut filter) than desired. The signal is then fed to a transformer simulating tape recording and reproducing head in analog domain. The secondary of the transformer may be wound on the Pleiades filter magnetic core itself.


The excess treble is then de emphasized by the "playback" preamplifier which rounds off any clipped peaks of the waveform, the high instateneous peaks.


Or anybody wishing could do their custom premphasis de emphasis curves since what will go to the ADC is the desired result as heard by the artist producer or preview listener's brain.


Variable cutoff frequency 6dB per octave premphasis and de emphasis filters can be used.

An example could be shunting the pickup of an electric bass by a low inductance transformer as described in the previous and other euroelectron posts.


Other example could be using an MD421 with a low inductance transformer (Pleiades filter transformer) by connecting it to the Pleiades V5 prepreamp. This results not only in a low cut for natural bass responce to listener's brain for soft voices but also to a high treble content sound. This is due to the high frequency responce of the mic, soft voice effort curves etc. This can be de emphasised by a high cut filter at the low voltage anode of the second electron tube stage. It can be a variable resistor in series with a capacitor or switched capacitors. This again with round any instantaneously clipped peaks.


Perhaps even better that the above ideas is getting the bass sound right to the listener's brain with a Pleiades filter. Then use full high pass premphasis with a different Pleiades filter at some other point of the signal path, right down to a low frequency as is done on magnetic analog tape recording. And then de emphasis to round any cliped peaks and keeping a sound of high volume right across the frequency spectrum as is done on reel to reel recording. More of this explained in other euroelectron posts dealing with magnetic recording analog simulation.