This arrived in the mail today: A Hyve synth.
I've been eagerly waiting for this since Feb 2017.
It's very Buchla Easel in its responsiveness to touch.
Thanks Skot for this incredible instrument. It's a beautiful fusion of engineering with art.
The synth looks deceptively simple. The two main ICs are a SN74HC393DR & CD40106BM96
Each chip consists of six Schmitt-Trigger inputs and is capable of making 6 square/pulse wave oscillators.
As there are two CD40106 we have 12 original square waves to play with.
Each square wave is fed into a Flip-flop. The flip flop outputs 4 squares waves (each a octave below the previous).
So in actual fact each of the original square waves has added to it 4 new waves at different octaves from the original. (1 + 4 = 5)
There are two CD 40106 ICs so there are 12 original square waves.
12 X 5 = 60
This I think, is how we achieve 60 voices.
(let me know if there are any mistakes)
This Octave-down effect has been used in the past in guitar pedals. The MXR Blue Box used this method to create a two octave drop by using flip-flop circuits to divide the frequency by two.
This created a buzzy synthesizer like tone.
The Roland SH101 used a CMOS 4013 dual flipflop to give three sub-oscillator waveforms; square at -1
octave, square at -2 octaves, and a pulse at -2 octaves.
Roland just fed the main oscillator output to the CMOS 4013 bistable flip-flop circuit to give the sub oscillator waveforms. Simple but ingenious.
+ Hyve touch Synth Facebook
+ Muffs - Hyve modifications