Audio Balance Shift Bug

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Level 1

5 points

Audio Balance Shift Bug

Hi, I have seen discussions on the Tiger bug which causes the audio balance to shift off center unexpectedly. I know that the PPC solution is to download the home made daemon Balanced 1.0, but what is the solution for Intel Macs?

Macbook Pro 15", Mac OS X (10.4.10)

Posted on Aug 15, 2007 10:57 AM

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Answer 1

iVmichael

Level 6

13,740 points

Aug 15, 2007 3:11 PM in response to viktorfrankl

I've never seen anything posted about an "audio balance bug" in an Intel based Forum, that was 2 years ago ...

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Answer 2

viktorfrankl Author

Level 1

5 points

Aug 15, 2007 3:30 PM in response to iVmichael

Hm....am I the only one?

I recently got a MBP. My last computer was a PB 15" Titanium, and I had the os x audio balance shift quite frequently. The audio output would unexpectedly drift towards the left or to the right channel and I would have to re-center it manually, until I downloaded the homebrewed app I mentioned. I wasn't sure if this was going to happen on the Intel Mac, and last night it did, and I discovered that Balanced 1.0 only works on PPC.

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Answer 3

iVmichael

Level 6

13,740 points

Aug 15, 2007 5:21 PM in response to viktorfrankl

Are you using iChat ?

Both the speaker and microphone (inside the left speaker) have auto gain/suppression functions and this can be changed by software at times ...

Have you run /Utilities/Audio MIDI Setup and set the global IO levels for all audio devices?

Did you use Migration Assistant to move data from the old Mac to the new one, are you sure your MBP OS is "clean" and correct ? (i.e. you have just imported the old bug along with everything else)

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Answer 4

viktorfrankl Author

Level 1

5 points

Aug 15, 2007 6:27 PM in response to iVmichael

Thank you for responding. I checked all the things you mentioned, and it's not any of those things.

The bug I'm referring to is a well-known problem in Tiger, the audio output balance sometimes shifts when the user changes the volume and there is currently a heavy load on the CPU. I originally asked my question (what to do for Intel Mac) in someone else's topic about the same problem on an iBook G3 and was directed to the MBP-specific forum. As far as I know, Balanced 1.0 was the only automated fix for this, and also as far as I know, it does not support Intel Macs.

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Audio Balance Shift Bug