I've finally gotten my hands on a small interface that does 192kHz
sample rate, and we're testing the apps with them, because some users
have reported that they won't playback at that sample rate.
Well, I can confirm this, but what seems to be happening is the HAL
Output Unit is not calling AudioUnitRender at all!
I have *extreme* error checking at every level (wrapped in Cocoa),
and *nothing* is reporting any errors.
Yet when I call AUGraphStart, nothing happens when the sample rate is
192kHz. All other sample rates with the same hardware device work fine.
Is this the fault of the driver? Of the HAL Output Unit? Something
I'm not configuring properly? I wished there was an error that would
point me in the right direction, but everything seems happy in the
setup calls...
Thanks in advance for any pointers!
Ev
Technical Knowledge Officer
Head Programmer/Designer
Audiofile Engineering
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