Walt:
I think I'll phone the PEAK folks and ask them what's up. Core Audio works
fine on my new eMac G4 800, but doesn't work well on my Dual 500. Who knows?
Lang
Lang Elliott wrote:
> Another question for Mac-heads:
>
> I just switched over to OS 10.2.4 on my dual 500 G4 Powermac.
>
> When I run PEAK 3.2 (for OS X) and choose "Core Audio" for sound out, and
> listen using headphones plugged into the Mac ouput jack, I often get
> crackling and distortion of the audio. However, if I switch the sound out to
> "Mac OSX Audio HAL (system)", then I get a really clean output with no
> distortion.
>
> What's up with this? What's the difference between "Core Audio" and "Mac OSX
> Audio HAL"?
We only have Peak 3.0 installed on Justin's OSX G4 (dual 1ghz). Also
running 10.2.4. I am just setting up some extra disks for transitioning
my G4, but it's not done yet. So we checked this out on Justin's machine.
With Peak 3.0 both settings play fine. However Peak crashes if you try
to set to Core Audio before playing any of the file. If you play a bit
in the other setting you can change to it and it plays fine. Looks like
the HAL setting is the one to use. Also looks like they did something to
that stuff between 3.0 & 3.2 to cause the distortion. Or it's just that
your older G4 can't keep up using that setting.
I'm assuming the two settings are using different pieces of the system
software to do the playing. Probably changes buffer organization, etc.
Core Audio makes me think that might be the older Unix audio system,
which would be hard pressed to play modern stuff unless it's been
updated. I've run into a few posted soundfiles run through it on unix
machines on the web and they have had problems. (mostly limited
frequency range)
Aren't computers fun?
Walt
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