Hi
I'm working on an app that play sounds (from audio files, let's say wav) at different pitches than the original pitch of the audio file. I did my test app on Mathematica and now that the concept is alright I want to make a stand alone app with Qt.
For the GUIO etc Qt covers everything I need but I have been seeking for a good solution to play files at different pitches and I don't seem to find it. Phonon seems a good and easy solution but I would have to find an effect for pitch shifting, which doesn't seem to be easy. I checked my windows 7 laptop with the phonon capabilities app and no pitch shifting effect appears. Besides, I need this app to be portable so I'm not sure if I depend on the backend of the computer where I install my software. If no pitch shifting effect, no app working fine.
On the other hand Qt offers QT Multimedia with QSound etc. I haven't found a way of changing the pitch of the audio file neither. Any advice on Phonon vs QTMultimedia as well as on where to find pitch shifting effect for windows would be much appreciated.
Thank you very much in advance.
Best reagds
Juan
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