Електронски Музикални Инструменти - Вокодер - Радио бр.9 1984 (А. Смирнов ,В.Калинин ,С. Мулаков)

 

Automatic Phase Box - Everyday Electronics by E.M. Lyndsell (E.E. 1977)

 

E.T.S.F. 1979

                                          modules by P. Girard et F. Gaillard ,the whole series available at yusynth archives

Frequency Multiplier from Bulgarian Magazine: Радио, телевизия, електроника 1978-01

Tri interesting circuits for hi-fi or post-production ,or simply experimentation with synthesized sounds ,circuits are from Bulgarian magazin : Radio ,Televizija  Elektronika 1975 ,i read somewhere one can use NTE 909 as equivalent


 presence filter ,tone controls and 4 band eq

Digital Quantisizer  from Elektor Magazine October 1983

 

 

 

Simple Theremin ,article by Jake Rothman in 1995 September issue of Practical Elecronics

 

 

EM&M Harmony Generator redrawn layout , print is in 300dpi 

Onda Quadra - magazine State Variable - VCF

Drum Oscillators - Onda Quadra 1979_01

 

Polyphony Magazine - Random Tone Generator ; Freq. Divider .
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Psychoacoustic Enhancer article by Paul Williams HSR August 1985

 

 

Mixer , headphone and tone controls from November issue of Onda Quadra ,designs by A. Lazzari ,Riccardo Monti

 

 

Onda Quadra - ADSR ,along with PCB prints and synthesizer girl