@animerrillproductions Thanks! : ]
Yeah it's all 100 year old tech. I even used Bakelite boards and point to point hand wiring to stay authentic to the vintage electronics art form.
All the basic ideas where there 100 years ago. Oscillators, Filters, Signal mixing, etc. It just took a while before engineers started to really know how to use them.
@elsemusic @animerrillproductions
Hey ElseMusic. : ]
It's 72 note full polyphone.
Each note has it's own oscillator and envelope generator.
C1(32hz) up to B6(1,975hz).
There is a function to start decaying unpressed keys faster, as notes start adding up.
There is no solid-state anything used in this circuit. It's 100% Vacuum tube technology.
It consist of over 300 cold cathode discharge diodes, 2 power tubes and 1 audio tube. (Rectifier, Regulator, Audio Impedance Amp Triodes)
@Fred_S_at @elsemusic @animerrillproductions
Glad you asked. : ]
Each note has a small trimmer to set it's rough pitch (+/- 400cents). Each oscillator's gas diode has been modified into an indirect electrostatic coupled Thyratron (wire wrap).
The note an octave above syncs the octave below it.
C5(523hz) syncs C4(261hz),
C4(261hz) syncs C3(130hz).
etc etc.
All oscillators are DC biased 105volts +/- 0.1 volts regardless of line voltage. Glass diodes are light/photon biased too for stability!
@parityflux @Fred_S_at @elsemusic @animerrillproductions
Thank you. : ]
At some point I'll build an enclosure for it and wire up the full 72 note keyboard. C1 (32hz) to B6 (1,975hz)
@AceArsenault @parityflux @elsemusic @animerrillproductions
A (the) source for sound technicians and sound engineers.
Unfortunately only in German, but there are several sites where you can translate it. -->
http://www.sengpielaudio.com/
.
https://de.wikipedia.org/wiki/Eberhard_Sengpiel
.
https://en.wikipedia.org/wiki/Eberhard_Sengpiel
Tontechnik Elektro-Akustik Ausbildung Lehre Audio Forum Community fuer alle Audio-Interessierten Mehr als Grundwissen Themen und Fragen Mikrofonaufnahmetechnik und Tonstudiotechnik - sengpielaudio com - Eberhard Sengspiel ist Sengpiel ebs - Tonstudio-Praxis Audio Elektroakustik und Psychoakustik - sengspielaudio ist sengpielaudio - sengpielaudio.com ist nicht sengpielaudio.de - Skripten Tests Studio Tips Tipps Mikrofone Tonaufnahme Toningenieur Tonmeister Eberhard Sengspiel ist immer Eberhard Sengpiel Berlin
@Fred_S_at @parityflux @elsemusic @animerrillproductions Nice! thank you. : ]
I've used http://www.sengpielaudio.com/ before. It's a great site!!!
Tontechnik Elektro-Akustik Ausbildung Lehre Audio Forum Community fuer alle Audio-Interessierten Mehr als Grundwissen Themen und Fragen Mikrofonaufnahmetechnik und Tonstudiotechnik - sengpielaudio com - Eberhard Sengspiel ist Sengpiel ebs - Tonstudio-Praxis Audio Elektroakustik und Psychoakustik - sengspielaudio ist sengpielaudio - sengpielaudio.com ist nicht sengpielaudio.de - Skripten Tests Studio Tips Tipps Mikrofone Tonaufnahme Toningenieur Tonmeister Eberhard Sengspiel ist immer Eberhard Sengpiel Berlin
@Fred_S_at @parityflux @elsemusic @animerrillproductions Yes. I like temperaments too, I tend to play a lot of fretless instruments like Violin, Cello, Fretless Bass. So I can play the notes more natural to their true pitch.
I even designed this instrument with controls for each pitch. So you can temper it.
Andrew "Ace" Arsenault
elsemusic
Fred_S_at (main)
Parityflux