VCOs as modulation sources

[Eli Brandt]

> That was a 2600 with an audio-range VCO frequency-modulating the
> filter with the Q set to self-oscillate.  Run that mess through [...]

FM of a self-oscillating filter is excellent.  My favorite 2600 patches
were based on a two-osc FM chain onto the filter... all kinds of
screaming sidebands, dense clouds of bleeps, and squashy rhythms.
Totally irreproducible, of course.

Has anybody analysed FM with a self-osc filter as carrier?  I bet it's
different from standard FM, because of the ringiness in the filter's
response to modulation.

-- 
. Eli Brandt                                          usual disclaimers .
. eli+ at cs.cmu.edu                                    PGP key on request .
. "I love the sound KWKWKWKWBKWKWBKWKWBKWBKWBKWBKWBKWBBKWBBBKWBBBB very .
.  much."    -- Banlu Kemiyatorn                                        .