[sdiy] Osc bank

[Peter Grenader]

on 8/1/02 6:00 PM, John L Marshall at john.l.marshall at gte.net wrote:

> Good for you.

Thanks, John...I appreciate that and I second the motion!  Actually, for
those of us doing 'What goes up, may go sideways" type electro-acoustic
music, 1V/oct inputs can be a major pain in the rear.

Peter
> 
> Ultra-precision 1V/Oct oscillators are not always required to make music.
> 
> 
> Take care,
> John
> ---------------------------------------------------------------------------
> Pacific Northwest DIY Synthesizer meeting, July 20, 2002
> See: www.sound-photo.com
> ---------------------------------------------------------------------------
> 
> ----- Original Message -----
> From: "Peter Grenader" <petergrenader at mksound.com>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Thursday, August 01, 2002 7:20 AM
> Subject: [sdiy] Osc bank
> 
> 
>> Hi guys,
>> 
>> Latest project:
>> 
>> (don't laugh).  I happened by my local electronics shack the other day in
>> search of TL072's, which I found and stumbled upon a kit of an audio range
>> function generator for a whopping 8 bucks.  Very simple circuit:  One
>> frequency pot, square, triangle and filtered sine waveforms.  bought four
> of
>> them.
>> 
>> Built one.
>> 
>> Not bad, not bad...definately not the answer to the world's problems at 8
>> bucks a pop.  Within about an half hour, I had rigged up a frequency VC
>> control and foound where to fabricate a saw output.  Then I got an idea:
>> 
>> I'm goingt o biuld all four of these within a separate module.  They are
> all
>> going to have their own frequency pot, but they are going to share a VC
> Freq
>> input.  Each will have outputs for all four of the waveshapes and four mix
>> outs for the 4 sines, 4 squares, 4 tri's and 4 saws.
>> 
>> I think it'llcome in useful when I want clusters and I can slap it into a
> 3
>> inch wide, 3 RU high space.  Each one of the function generator boards are
>> about 1 x 1 inch!  I'm not going to worry about 1v/oct, i'm not going to
>> worry about stability, I'm not going to worry about the absolute beauty of
>> the waveforms - it's just going to be four voices that can be used when
>> non-critical tracking is required.  I'll call it a Osc Bank of Uncertainty
>> or something.
>> 
>> tell me if I am nuts,
>> 
>> Peter
>> 
>> 
>