To pitch shift audio in real-time here is the basis for a cross-platform 
external:
http://www.surina.net/soundtouch/
This could probably be integrated alone quite neatly.

Pulling the audio out of a video to be able to pitch shift it in real-time 
could be done with ffmpeg (you need to decode it before you can pitch shift), 
although on mobile platforms that is extremely inefficient vs using system 
frameworks that take advantage of dedicated hardware. If you need this you 
might as well be replacing LiveCode's multimedia support.

When the platform refresh is complete it might be feasible to extend LiveCode 
in this direction but I wouldn't recommend anyone attempt it at the moment.

Unless this requirement is just a small part of a bigger project that LiveCode 
is very well suited for then I'd be inclined to agree that it's the wrong tool 
for the job.

Mark


Beat Cornaz <b.cor...@gmx.net> wrote:

>Hello to everyone,
>
>Is there a way to pitch-shift audio without changing the speed (playback rate) 
>in real time in LC? 
>
>And is there a way to get the audio of a movie player to be pitch-shifted 
>without changing the speed (playback rate) in real time?
>
>If this is not possible, is there an external that can do the job?
>
>Thanks a lot,
>
>Beat Cornaz
>
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