Re: AUTimePitch pitch parameter
Re: AUTimePitch pitch parameter
- Subject: Re: AUTimePitch pitch parameter
- From: Robert Carroll <email@hidden>
- Date: Tue, 26 Nov 2013 19:30:27 -0500
| Hi edward,
Thanks for your reply.
I did manage to get a modified version working from the AUTimePitchTest code. I'm passing a range of values based on the UI slider position from -200 cts to +200 cts and see the expected pitch changes.
Do you know if the timepitchAU requires setting the output stream format explicitly? My application's audiograph so far just sets the output sample rate on the mixer and output AUs. This doesn't appear to be enough to get the timepitchAU to work.
regards,
rob
Robert Carroll RSM Records Toronto
I have been looking a the AUTimePitchTest sample code. It successfully
changes the playback rate parameter in an AUTimePitch audio unit.
When I modify the sample code to change the pitch parameter, it seems to
have no effect.
There is an earlier thread on the core audio list with the same issue. Has
anyone been able to get this to work? Is this a know bug with the
AUTimePitch unit?
thanks,
rob
What values are you using? In the earlier thread he was using the values 0.0 to 20.0. Not much pitch shifting going on there...I'd say try 100.00 and see what's up. kTimePitchParam_Pitch The value is in cents, i.e. 1/100ths of a semitone. Range is -2400.0 to +2400.0 which is down two octaves to up two octaves. edward
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