30 Jul
2014
30 Jul
'14
2:18 a.m.
On Tue, Jul 29, 2014 at 08:47:13PM -0400, jonetsu(a)teksavvy.com wrote:
Is it possible to slow down an audio file (mp3 for
instance) while
keeping the same pitch ? Does it even make sense ? The software would
have to insert more of the same audio 'bits' to make it last longer.
Is it possible ?
Cheers.
_______________________________________________
You can use WSOLA based time-scaling (Soundtouch) [1] or Phase Vocoder
(Rubberband) [2] to do that. If you only need to play slowed down audio
mplayer/mpv has 'scaletempo' parameter (from reading the manual it seems to be
WSOLA-based). Gstreamer also has a soundtouch plugin in gst-plugins-bad.
[1] http://www.surina.net/soundtouch
[2] http://www.breakfastquay.com/rubberband