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Something awfully strange has happened to me for the second time today. I'm not sure what I did to trigger it ( nor what I did last time ), but suddenly all audio being played sounds muffled, almost as if a low-pass filter has been applied to it. It's more than muffled, in fact it almost sounds like everything's at a lower bitrate... my AIFFs are now sounding like poorly-ripped MP3s. It's awfully strange, and I'm going to see if a reboot solves it once I've hopped off this torrent I'm seeding.

Has this happened to anybody else?

Here's my info:

iMac FP 17" 800 mhz
OS X Server 10.2.6
M-Audio Quattro USB Audio Interface
Mackie HR824 Monitors

[RayX]

I have experienced the same problem.

Using a Powerbook 17" with a M-Audio Sonica USB. Connected using Toslink to a 5.1 Receiver.

I think you will find if you reboot with the USB audio device plugged in, the sound quality will be ok. But if you boot your machine, and then plug-in the device, the sound will be muffled like you describe.

Also I think sleeping the machine seems to affect it some how, but I have not worked out the exact pattern yet.

I was about to e-mail M-Audio about this, but now that I have seen someone else using a different device, I believe the problem may in fact be with OS X (or iTunes?)

This has been a problem with 10.2.4, 2.5, 2.6 (Used iTunes 4.0 and 4.01 across these versions). Have not tested with any Panther builds.

Perhaps someone with an M-Audio USB device and a copy of Panther could test this and let us know?

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I'm glad I'm not the only one with this problem.

Rebooting did fix it, thankfully. It only seems to crop up every few weeks... I also noticed some CoreAudio errors appeared at the same time which were preventing VLC from running, and MIDIs/swfs stopped playing in Safari.


EEeeeeenteresting..../