Il 26/04/23 05:39, Yisheng Jiang ha scritto:
To make concrete of what I’m trying to do, here’s a (wip) code example
https://github.com/yishengjiang99/sf2rend/blob/bacca1bf2092dbd78b1affacac11155b70f1bc55/spin/mk_lpf_fade.js#L29
Sent from my iPhone
On Apr 25, 2023, at 8:37 PM, Yisheng Jiang <[email protected]>
wrote:
I’m trying to render a note that feed into a IIR filter (2-3 poles)
whose cutoff frequency following an envelope generator, and it’s not
possible for me to compute the z-transform parameters every rendering
block..
Is it approximately the same to generate two pcm streams with the
starting and ending cutoff frequencies, then cross fade them to make
the resultant sound?
May I ask why you can't compute coefficients continuously (each block/N
samples)? What sort of platform are you targeting? The repo hints at a
web page/app...
Best,
Stefano D'Angelo
