[sdiy] VCO Linear Voltage

[Jerry Gray-Eskue]

I see how it would be useful in a LFO for envelope control, but I still do
not get why it would be better for audio FM patches.

If we setup a patch to vary the pitch at say 440hz by 20 cents using linear
FM, one octave up at 880hz the variation is only 10 cents, two octaves up it
is down to 5 cents. So how is this better than using the 1 Volt per Octave
input for FM to vary the pitch at a fixed 20 cents for all frequencies?

Is it just a "Cool" effect that people like?

- Jerry



-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of Andreas
Wetterberg
Sent: Tuesday, November 17, 2009 8:22 AM
To: Synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] VCO Linear Voltage


Jerry Gray-Eskue skrev:
> Question:
>
> How is the linear voltage control of frequency useful on a 1 volt per
octave
> VCO?
Linear FM is arguably better for doing FM-style synth patches. And
sometimes it's useful for envelope/LFO modulation as well, depending on
the patch at hand. But mainly the fm, in my opinion.

andreas.
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