Opened 13 years ago
Last modified 8 years ago
#7735 closed defect
Poor sound quality with Windows 7 - too small buffers? — at Initial Version
Reported by: | Peter Åstrand | Owned by: | |
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Component: | audio | Version: | VirtualBox 3.2.10 |
Keywords: | Cc: | astrand@… | |
Guest type: | Windows | Host type: | Linux |
Description
Basic setup: Linux as host, Windows 7 as guest, AC97 driver and PulseAudio backend. This setup seems to be very sensitive to timing issue. It doesn't take much to get a very "choppy" sound output. This is my test case:
- Enable PulseAudio TCP support (using paprefs)
- export PULSE_SERVER=localhost:4714
- ssh -L4714:localhost:4713 localhost -fN
- Run VirtualBox, activate PulseAudio audio backend. Boot Windows 7.
- Try a Youtube video (http://www.youtube.com/watch?v=XrodCAPrg0A is audio only)
On one machine, this *almost* produces OK audio output. You can clearly hear glitches, though, and starting, say, Windows Update makes the quality worse. This is a Dell E6400 laptop.
On another machine (Dell Optiplex 760), the glitches are even more common; you can barely hear the lyrics.
Both machines are running 64-bit Fedora 14. Windows 7 instance is 32-bit.