Re: [linux-audio-user] LADSPA Module

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Subject: Re: [linux-audio-user] LADSPA Module
From: Andy Wingo (apwingo_AT_eos.ncsu.edu)
Date: Sat Dec 08 2001 - 20:16:27 EET


On Sat, 08 Dec 2001, Kai Vehmanen wrote:

> On Fri, 7 Dec 2001, Andy Wingo wrote:
>
> >> * change the speed of a wave without changing pitch ???
> > No. To do this, you would have to read data at a different rate than you
> > write it. In order to get this effect, you need to have a ladspa host
> > that can change the speed by resampling then adjust the pitch with
> > steve's plugin. Experts correct me if I've erred on this one ;)
>
> Hmm, interesting idea. How about:
>
> ecasound -i foo.wav -o /dev/dsp -ei:200 -el:pitchScale,0.5 -c

or, in gstreamer (cvs, but we're gearing up for another release soon),

gstreamer-launch filesrc location=foo.wav ! parsewav ! speed speed=2.0 ! \
ladspa_pitchScale Pitch-co-efficient=0.5 ! osssink

we're part the 'in club' too ;)

cheers,

wingo.


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