[music-dsp] Filter Envelopes in Polyphonic VA synths

[Veli-Pekka Tätilä]

<snip>

> Does the filter envelope usually control the cutoff, resonance, both or the mix between 
> filtered and unfiltered audio?  

In most synths one envelope controls cut off (and another amplitude). In my opinion, every "good" VA synth should have at least 3 envelopes (ADSR): one hard-wired to amplitude, another hardwired to filter cutoff and the third available as a modulation matrix destination. The modulation matrix is a good way to implement flexible parameter modulation. With a mod matrix you could for instance route envelope 3  (or LFO1) to filter resonance or velocity  to oscillator pitch when sync is on. Many more powerful VA synths feature a modmatrix these days. 

I think well-chosen 16 sources and 16 destinations should be enough for all but the most bizarre modulations. With at least 4 independent modulation routings, why not eight as we are talking about a soft synth?
 



dupswapdrop -- the music-dsp mailing list and website: subscription info,
FAQ, source code archive, list archive, book reviews, dsp links
http://shoko.calarts.edu/musicdsp/