[sdiy] Unstability of oscillators and psychoacoustic qualitie s

[Magnus Danielson]

From: Gene Stopp <gene at ixiacom.com>
Subject: RE: [sdiy] Unstability of oscillators and psychoacoustic qualitie s
Date: Tue, 24 Sep 2002 10:09:52 -0700

Hi Gene!

> I remember the "Tau" VCO kits from CFR back in the 70's... in their
> documentation they went out of their way to detail their "warm" sound as
> resulting from slight noise modulation of the sawtooth reset theshold -
> graphs and everything. Back at the time I remember thinking that either they
> were on to something or they were trying to rationalize the behavior of
> something they couldn't do anything about ("it's not a bug, it's a
> feature!"). Anybody have a copy of their datasheet?

Most interesting. I naturally would like to see what they had to say on the
subject. I have not even heard of "Tau" VCO kits or CFR.

Any info would be very nice indeed.

My #1 bet is on Gaussian phasemodulation as mandatory for many oscillators
make oscillators "warmer". Note that proper insertion of noise into an
oscillator is not as easy as one would like, i.e. it is not "just" patching it
in.

Cheers,
Magnus