Help! All of a sudden garbled sound

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gbarksdale
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Help! All of a sudden garbled sound

Post by gbarksdale » Sat Dec 11, 2010 5:38 am

The last couple days I've had a problem recording a track while another audio track is playing in Audacity. The track I'm recording will sound garbled -- kind of like static and choppy. This will happen, say, 9 out of 10 times that I try to record with another audio trk playing or even muted. The thing is I've just completed two major song projects, each with about 10 tracks. I've had no problem til now recording a track -- even with all the tracks playing at once. I can record a track without another audio trk playing and it sounds perfect.

This happens when I'm playing my acoustic guitar through an amp using line-in. It also happens when I'm playing my keyboard using line-in. Haven't tried it on vocals. And I've tried using different chords for the line-in and for my instruments. Nothing helps.

Project rate is 44100 , 16-bit -- the same settings as my realtek speakers (for playback) and the Realtek HD Audio (for recording). Again, I've had no problems on previous major multi-track recordings, so I really don't think it's a sound card issue.

My computer is a Dell Studio XPS, Windows 7 and about three months old. Using Audacity 1.32

If it helps, here's a screen shot and an audio sample of my dilemma:
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kozikowski
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Re: Help! All of a sudden garbled sound

Post by kozikowski » Sat Dec 11, 2010 6:06 am

I'm betting that's Windows Conferencing Echo Cancellation kicking in. You can turn that off in Windows Control Panels.

http://forum.audacityteam.org/viewtopic ... 82#p113805

Koz

gbarksdale
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Re: Help! All of a sudden garbled sound

Post by gbarksdale » Sat Dec 11, 2010 6:33 am

Koz

I think you bet right. I couldn't find the conference echo thing, but I unchecked things like allowing devices to take control and DC Offset Cancellation. Disabled all sound effects. I recorded a half dozen test tracks with another audio trk running in the background and they all sounded beautifully.

I hate Windows.

Thanks.

rdenney
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Re: Help! All of a sudden garbled sound

Post by rdenney » Tue Mar 12, 2013 9:34 pm

New DELL XPS 8500 running Windows 7. Similar symptoms (garbled sound). Only happened on some tracks. This seems to have fixed:

Control panel > Hardware Sound > Sound > Playback > right click properties > Enhancements > Disable all sound effects

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