Pitch Shifting and File Saving Problem
Pitch Shifting and File Saving Problem
- Subject: Pitch Shifting and File Saving Problem
- From: Mathew iprocessor <email@hidden>
- Date: Tue, 22 Oct 2013 12:01:38 -0600
I am trying to do TimeStretching and Pitch shifting of Audio files with Audiounits dynamically. ( Trying to do Ramped Slow mo like english letter "U" behaviour)
I hope, "AudioUnits" is the only option apart from other third party frameworks like Dirac,etc. Is there any other possibility with IOS-SDK API's(apart from Audiounits)?
Kindly check this link for my project workspace.
https://drive.google.com/folderview?id=0BxlMIbXuP5iFU2tWeFYza1U5aG8&usp=sharing
For a quick view, http://pastebin.com/7WF9DyXX has the main code.
I am able to vary the time shifting.
My problem:
I don't know how to save the audio file after pitch shifting. Also, in my real time, the pitch shifting will be dynamic.
In my render callback, the method "ExtAudioFileWriteAsync" returns -50.
Please help me guys.
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