[PD] Analog/good-sounding oscillators in PD

[Frank Barknecht]

Hallo,
alexandre matheson hat gesagt: // alexandre matheson wrote:

> It is my understanding that analog synthesizers generate the basic  
> waveforms with additive synthesis. I'm wondering if using [tabosc4~]  
> and sinesum be a step in the right direction?

To fight foldover at half the sample rate this will only work for a
certain range. For example if you want to play any non-sine waveform
at almost half the sample rate, you will only be able to play a
sine-waveform at that frequency without any partial above that folding
over. Such foldover will also happen when you play a sinesum through
tabosc4~.

Miller's book describes some ways around this problem, which I
sometimes use as well (attached is a little GOP abstraction ripped
straight from his examples).

Besides foldover, which can be fought, there also is another area of
getting "good" sounding analogish oscillators: Analog gear tends to
have certain distortions an irregularites, that people tend to like
and to associate with that "warm" analog feeling. I guess, Reaktor may
introduce some of this stuff as well. There is a LADSPA plugin, forgot
its name, by Steve Harris which has a "warmth" control to introduce
such distortions, but I think, these are hard to model and would need
a lot of fiddling. Anyways static waveforms always tend to sound a bit
digital, so finding ways to make the sounds dynamic often is useful. 

Ciao
-- 
 Frank Barknecht                 _ ______footils.org_ __goto10.org__
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