why V/oct?

[Verheyden Tom]

At 17:40 7/02/97 +0100, you wrote:
>
>Does anyone know where the V/oct standard came from and why it was chosen?
>Does it have anything to do with resolution/noise performance as a function
>of pitch and loudness (the same amount of noise on a VCO CV will cause as
>much pitch variation at one note as another, say an octave higher -
>ignoring freq. diff limen for the moment - similarly with loudness).
>
>rob.
>
This was one of the first standards between several companies. It's based on
the fact that when you wan't to get an octave higher, you'll have to
multiply the frequency by two (an exponential-function), the other side, it
was easy to create an exponential function by a transistor (see the
diagrams). The connection between voltage and current is exponential with a
transistor.
To make it 1V/oct is just an agreement between the factories.

regards

Tom,

>
>
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* Da funk back to the punk  -------        Daft Punk   *
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* Tom Verheyden                 at KHK Geel Belgium.   *
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