[linux-audio-user] stretching sound
avp at altlinux.ru
Mon Dec 1 06:25:42 EST 2003
Julien Claassen wrote
> Hi all!
> I've been trying to stretch a soundfile. It is a piano track with mostly two
> voices only. I did it with an fft plain phase vocoder. Now there are a lot of
> parameters and I got some undesireable delay. In general the stretched sound
> was good, but the delay is disturbing. So here's the question, how should I
> set the following parameters to get the best result?
> fft-length (as high as possible?), windows per second, window length,
> windowtype (hamming, triangular, kasier with several coeffecients).
> Any ideas or practical experience with that? - I'm NOT doing it in realtime,
> so CPU-time is no problem. I've got time! :-)
Alexandre Prokoudine | "When you set yourself on fire and aim
ALT Linux Documentation Team | for the sky, you hope to leave behind
E-mail: avp at altlinux.ru | some sparks of heat and light"
JabberID: avp at altlinux.org | Neil Peart
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