Digital Audio Problems: More on Muting the iSub; ViaVoice a Culprit?

More on Muting the iSub Yesterday we reported problems muting Apple's iSub, and the workaround of turning volume down from System Preferences. However, problems redirecting low frequencies from the iSub to headphones remain. Tom Kurland writes:

"Not only does the mute button on the keyboard not mute the iSub, but if you plug in headphones the iSub does not mute and the low frequencies do not go to the headphones but the iSub. Muting the iSub in System Preferences just mutes the iSub and does not redirect the low frequencies to the headphones. You have to unplug the iSub".

ViaVoice a Culprit? John Glenn reports that IBM's ViaVoice is the source of his digital audio problems under Mac OS X 10.2.x:

"IBM ViaVoice causes the skipping, popping sound every time under Jaguar on my DP 533 MHz G4. iMovie records from the USB mic just fine, until you say something to ViaVoice, then iMovie starts having the problem too. Quitting ViaVoice doesn't stop the problem, but recording something in Final Cut Pro instantly clears up the problem in iMovie (but not in ViaVoice). The pops are every 10th of a second, and get louder if you increase the gain, and stop half a second later if you stop talking. IBM currently has no fix. A clean install of Jaguar and ViaVoice didn't help."

Feedback or workaround possibilities for this issue? E-mail late-breakers@macfixit.com

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