Setting a different samplerate on an AudioUnit than the one specified in Audio MIDI Setup
Setting a different samplerate on an AudioUnit than the one specified in Audio MIDI Setup
- Subject: Setting a different samplerate on an AudioUnit than the one specified in Audio MIDI Setup
- From: Håvard Graff <email@hidden>
- Date: Thu, 7 Jan 2010 23:46:10 +0100
Hi.
I
want to make sure I always playout and capture at a samplerate of 48000
Hz, regardless of what a user have set as the Format in Audio MIDI
Setup.
By using kAudioUnitProperty_
StreamFormat on my
AudioUnit, I am able to always configure 48000.0 for my speakers (using
mSampleRate), with sound playing out correctly for any configured
Format (Built-In Output Format set to 44100.0 Hz still works)
However, for Capture, I am unable to capture any sound as soon as I
set the Format to anything else than 48000.0 Hz, given that I also use
the kAudioUnitProperty_StreamFormat to try to force it to 48000.0.
Note that I do not get any OSStatus-errors doing capturing with
mismatched configs, it simply goes silent.
So, how can I make sure that I can keep capturing at 48000.0 Hz, regardless of what the user have set in Audio MIDI Setup?
regards,
Havard
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden