MATRIXSYNTH: Czechoslovakia's 1977 Modular Synth, the Číslizvuk

Sunday, August 24, 2014

Czechoslovakia's 1977 Modular Synth, the Číslizvuk

via Connor 'Macleod' Eck on The MATRIXSYNTH Lounge

This is the first post to feature the Číslizvuk.

There was also the Vurt and the ASYZ.  Curious if there was any connection between them all.

Update: some info via Bastl Instruments:

"Milan Guštar wrote about him in the book Elektrofony II:

In 1977 Miroslav developed Kasper and Jaromir Vitek in the Czechoslovak Research Institute of Radio and Television (sausage) modular monophonic synthesizer Číslizvuk. The tool is analog, in some of his circuits are also used in digital integrated circuits. In addition to the prototype were built only three specimens obtained Pilsen Experimental Czechoslovak Radio studio, studio Czechoslovak Television and Music Faculty of the Prague Academy of Performing Arts. It currently has one tool in their collections Czech Museum of Music.

Číslizvuk is completely modular, individual blocks are interconnected and all their inputs and outputs are connected to the socket on the front panel. The tool includes two VCO, VCF, two, two VCA, two envelope generators, shaping and control voltage sequencer. VCO form a rectangular signal with a PWM signal continuously adjustable between a saw and a triangle. Both signals can be mixed. The dependence between the Debug voltage and frequency is 0.6 V / oct. VCF are third-order LPF. Beamformer control voltages comprises two inverters and two integrators with adjustable time constant. Sequencer has two channels and eight steps, individually adjustable lengths. All modules are placed in a common metal enclosure measuring 45 x 32 x 58 cm. Four-octave keyboard is connected dvanáctižilovým cable included in the set are two pedals generating variable control voltage."

Update 2: some additional in via Bastl Instruments:

"Bastl Instruments VURT was a research lab of radio and television and they mady several synths including this one Čislizvuk + this minimoog style one:"

Bastl Instruments ASYZ was another research lab focused more into film production - since it was in one city there must have been a connection... the music in the mainstream film production was awesome at that time: ,"

Osada Havranů 1/5

Zdeněk Liška-ikarie xb1

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