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96 Khz / 24 bit support with HAL?
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96 Khz / 24 bit support with HAL?

First off, forgive me if this is the question steps outside the parameter of the CoreAudio mailing list but I'm not sure where else to ask the follow.

Right now I'm writing a review for the M-Audio Revolution 7.1 Audio card for insidemacgames.com but while I was toying with this card I suddenly was presented with some issues and I wanted to get my facts straight. I surfed some tech docs which mostly went over my head pretty quickly (I'm not an OS X dev), the but here's what I understand, correct me if I'm wrong.
I was playing around with 96 Khz, 24 bit sound and noticed fairly quickly that most apps, including Quicktime, do not support beyond 48 Khz, 16 bit sound. The apps that did support playback of high res audio didn't. When I was using Peak 3.0, I noticed I was able to playback sound when using CoreAudio setting but not when using either of the HAL settings. The HAL (CoreAudio Framework) interfaces with the Audio Family in the kernel yet its possible to bypass the HAL itself and access CoreAudio. Also, its noted that CoreAudio supports 96 Khz/24 bit sound as current yet the M-Audio Revolution drivers sport 192 Khz and the checkbox to boot. Also does Quicktime rely on the HAL system? Lastly, any shareware/freeware apps that I can recommend to readers that can playback 96 Khz/24 bit sound? Thanks in advance for to any replies!

From
Greg Gant
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