Subject: [linux-audio-user] stretching sound
From: Julien Claassen (julien_AT_c-lab.de)
Date: Sat Nov 29 2003 - 05:50:12 EET
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! :-)
Thanbks for any help or good ideas!
Kindest regards
Julien
Julien Patrick Claassen
jclaassen_AT_gmx.de
julien_AT_c-lab.de
http://www.geocities.com/jjs_home
SBS C-LAB
Fuerstenallee 11
33102 Paderborn
Phone: (+49) 5251 60 6060
Fax: (+49) 5251 60 6065
www.c-lab.de
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