Ticket #7735 (new defect)
Poor sound quality with Windows 7 - too small buffers?
|Reported by:||astrand||Owned by:|
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.