[sdiy] PV-1 Pitch-Voltage Converter

[Bill Keys]

Also:

4); Tap into the control line of your DC-10's propeller. The pitch control 
probably already works off of a voltage, but can be scaled to V/Oct or 
V/Hz....


>From: "John L Marshall" <john.l.marshall at gte.net>
>I know that some on this list like alternate controllers. The topic of 
>pitch
>to voltage converters brought alternative ideas.
>
>1) Use a cheezy Kustom radar unit to measure the speed of the pitch. It 
>must
>be a Kustom radar unit. It is the same company that made the cheezy guitar
>amps with the tuck-and-roll finish. The speed reading can be converted to
>analog voltage.
>
>2) Use a pressure transducer in the catchers mit.
>
>3) The rate that the droplets of maple fall into the bucket could be
>measured. The period measured and converted to a voltage.
>----- Original Message -----
>From: <marmot1 at magma.ca>
>To: <synth-diy at dropmix.xs4all.nl>
>Sent: Thursday, August 23, 2001 4:48 PM
>Subject: [sdiy] PV-1 Pitch-Voltage Converter
>
>
> > Hi List,
> > Just wanted to mention that I have recently built one of Harry's PV-1
> > pitch-voltage converter boards (available from EFM), and it works
> > nicely. As a test, I set the Jupiter-8 to monophonic mode, fed the JP-8
> > output into the PV-1, whose output in turn controlled the frequency of a
> > cloned Moog Prodigy VCO. Got tight tracking over 5 octaves (length of
> > JP-8 kbd). As the converter works by measuring the instantaneous period
> > of the input waveform (rather than being a simple tachometer-type
> > circuit) it also follows rapid pitch changes - portamento, LFO mode
> > quite well. Harry was quite helpful with "technical support".
> > Mike
>

+_+_Yes, honey, I know there are 25 boxes of electronic junk cluttering up 
the attic. They will, one day, magically be transformed into a modular 
synthesizer cluttering up the attic.... www.mp3.com/OriginalSimulacrum _+_+


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