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Article from Polyphony, October 1976


VCO's: Tune one VCO near the bottom of it's range. Tune the other to a harmonic 10th higher (slightly below the equally tempered 10th). This tuning is critical and must be tuned for minimum resonance. The usable range will be around the bottom two octaves.

Bias: About 1.5 volts
Initial PWM: About 50%
Envelope: Attack - minimum, Decay - 75%
Filter Q: 80%

Submitted by Sheila Thornton, New York, NY.


KBD: High Octave, No Glide
AR: Expand - Off
Attack - 0%
Decay - 75%

4730: Range - Maximum
Bias - 1 to 2 VDC set to just higher than the highest strong harmonic.

4781: Tune triangle to an augmented fourth above the pulse.

Pulse VCO: Pulse width approximately 30 to 40%.


as used by Isao Tomita in Promenade of Pictures at an Exhibition

KBD: Low Octave

4730: Lowpass Output
Initial Freq. - maximum
Q Control - 80%

Envelope Generator: Attack - 10%
Release - 25%

Variable Output - 75%
Reverb: Output Mix - 80%

Submitted by Tim Fluharty, Lodi, OH.


VCO's: Tuned near unison. Triangle outputs used.
VCF: Lowpass output used.
Initial Freq. - maximum
Q set at maximum.

KBD: Any pitch range with a slight glide.
ADSR: Set for long release and medium attack, with full sustain.

This readily recognizable synthesizer sound is perhaps the pioneering sound for synthesizers in pop music. The "hollowness" of the sound of this patch is equally applicable to Dick Hyman's "Minotaur" or Keith Emerson's "Lucky Man" or "Aquatarkus" as performed on "Welcome Back My Friends". Manually sweeping the filter's range setting can add a lot of expression to this patch.

It seems to sound best when used for bass and low register work.

Submitted by Jim Riter, Richardson, TX.


KBD: Either pulse or step triggers may be used.
ADSR: Attack - 100%
Sustain - 100%
Release - 40 to 50%

Variable Output - 40%

AR: Attack - 10%
Decay - 20%

Variable Output - 50 to 100%

VCO (or other signal source):
For best results should be harmonically rich.
Inverter: Offset - 5 volts
Filter: Any section may be used. Vary range and Q settings for numerous effects.

For more rapid repeating effects, decrease decay setting of AR generator. Almost every setting in this patch can be varied to produce more effects — play with it.

Submitted by Robert Graves, Columbus, OH.


Set VCF "attack" and "decay" for proper speed use; hit trigger. Rotate VCF "Freq/Q" slowly counter-clockwise. When fully CCW, begin rotating VCF "range" slowly CCW. When rotated about halfway, release trigger. Effect complete.

Submitted by Mike Weiblen, W. Hyattsville, MD.

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Publisher: Polyphony - Polyphony Publishing Company

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Polyphony - Oct 1976

Donated & scanned by: Vesa Lahteenmaki


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