Name: Fonoton 2069 Multimode Filter Demo by BARD Synthesizers
Duration: 5 min
Description: Fully equipped multimode filter based on NJM2069 chip found on DW-8000 and Poly-800 synthesizers.

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Emergence In Motion (feat. Tenebral Cortex)

Fully equipped multimode filter based on NJM2069 chip found on DW-8000 and Poly-800 synthesizers.

Fonoton 2069 Multimode Filter Demo

A demo of the Bard Vacuform VCF for the MW community. This is a tube implementation of the famous Steiner-Parker Synthacon multi-mode filter using a 6н3п Soviet double-triode and two EAA91 double-diodes. Time marks are as follows:
0:00–0:15- Dry Signal; Metasonix R55 and R54 into an R53

0:15–0:31- Lowpass; resonance at about 10:30

0:31–0:47- Lowpass, plus reverberated “dry” into bandpass; Resonance at about 10:30

0:47–2:06- Manual Lowpass sweeps; resonance at 7:00 (Zero Resonance), 9:00, 10:30, 12:00, 1:30, 3:00, and 5:00 (Full Resonance/Self-Oscillation)

2:06–3:08- Manual Bandpass sweeps; resonance at 7:00 (Zero), 9:00, 12:00, 3:00, and 5:00 (Full)

3:08–4:19- Manual Highpass sweeps; resonance at 7:00 (Zero), 9:00, 12:00, 3:00, and 5:00 (Full)

4:19–end- Manually sweeping filter with all inputs in use. LP is R53 in self-oscillation, BP is R54, and HP is R55

Pardon my jittery hand during the sweeps; I tried to keep it as steady as possible.

Bard Vacuform Demo

I found an old box of cassettes with a couple of gems in it. One actually has my final project from an electronic music composition class I took in 1979. I was poking my nose into dusty corners in the basement of the music building at the University of Arizona, and found a rack of wire wrapped circuit boards with a terminal, a couple of 8" floppy drives, and an 88 key keyboard attached! I started asking around, and learned that it was one of the 5 prototypes of the Micor Coupland digital synthesizer. It had been left by a professor who had retired, and no one knew anything about it. So being me, I asked if I could play around with it. They made me take the 400 level class (as a sophomore) to get access to it, and I happily obliged, and got a couple of friends to help me haul it out of the basement and set it up in the 8-track studio. Now keep in mind that in 1979 no one had even considered a digital synthesizer, and you could count the polyphonic synths in the WORLD on one hand. Here was a FULLY (88-note) polyphonic DIGITAL synth! So I set about putting it all back together, started sticking floppies in until I found one that actually booted up, and I was off and running.
It was based on the TI-9900 microprocessor. Sounds were created by entering an equation that gave voltage as a function of time. It had 2 oscillators, the main oscillator and a modulation oscillator, and an ADSR that controlled the amplitude. The keyboard was the only "performance" control - all other real-time changes to the sound had to be commanded on the terminal. I learned to type with one hand while playing with the other.
Anyway, this is what came out of a fun-filled semester playing with this beast. I am putting it up here strictly for its historical significance; to showcase what this synth could have become if Micor hadn't pulled the funding.
There is a little bit of info on it at http://en.wikipedia.org/wiki/Coupland_Digital_Music_Synthesizer - but the story I heard (from a girl I was dating, who's father was a friend of Rick Coupland) was that Rick was so mad when Micor pulled the funding that he destroyed all of the documentation, and wouldn't even talk about the project to anyone after that. This MAY be the only surviving recording of this magnificent instrument.

Fonoton 2069 Multimode Filter Demo

BARD Synthesizers

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