On Thu, Sep 14, 2000 at 09:48:04PM +0200, Markus Fick wrote:
>
> In the case you want to change the sampling frequency WITHOUT changing the
> duration of the sound (or changing the sound duration without following the
> ratio of original to replay sampling rate) the following link is a good
> point for information (incl. source code):
> http://www.dspdimension.com/html/pscalestft.html
>
Note, that pitch shifting without artefacts can only be done by integer
factors.
The more often used factors around 0.8...1.0 are generating amplitude
modulation of your input signal, aharmonic distortions and also preecho
problems, with can be reduced by variable analyzer window size.
--
Frank Klemm
--
MP3 ENCODER mailing list ( http://geek.rcc.se/mp3encoder/ )
