Re: getting 22050 Hz sample rate on Bronze PowerBook G3
Re: getting 22050 Hz sample rate on Bronze PowerBook G3
- Subject: Re: getting 22050 Hz sample rate on Bronze PowerBook G3
- From: Jeff Moore <email@hidden>
- Date: Wed, 20 Mar 2002 11:38:31 -0800
on 3/20/02 11:04 AM, Phil Burk <email@hidden> wrote:
>
t passes for 44100 but not for 22050 so I think I am making the call
>
correctly. Is it not supported because the device is shared?
It's not supported because it's not supported by the hardware.
Most of our recent machines do not support 22050 in hardware. On 9, the
driver fakes it by doing rate conversion in software. On X, this does not
happen. The hardware only does what the hardware can do. It will not
simulate things it doesn't do.
If you need rate conversion (or format conversion), use the AudioConverter
API in the the AudioToolbox.
--
Jeff Moore
Core Audio
Apple
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