[mythtv-users] Sound quality issues
Andrew Leahy
aleahy at knox.edu
Sun Jan 14 19:27:33 UTC 2007
Hello,
I've just installed my first mythtv system. Everything works well
except for the sound quality, which for some reason is really bad. In
particular, the audio is choppy, distorted, and there's an annoying hum
in the background. To give you an idea of just how bad, here's a sample
I converted to mp3:
http://www.leahy-mcdermott.org/~aleahy/mythsound-output.mp3
I originally thought it was a performance or encoding issue. But
mythbackend is only using 15% of the CPU when encoding and the problem
occurs whether I select the 'uncompressed' PCM or 'mp3' option under my
recording profiles. Now I'm guessing that it's something in my capture
set-up. (I have an ENLTV saa1374 with sound output sent to the line in
on my onboard sound card.) The funny part is that watching TV via tvtime
looks and sounds just fine.
Any ideas about what is up here? Here's a copy of my amixer output if
it's helpful:
http://www.leahy-mcdermott.org/~aleahy/asound-output.txt
Thanks for your help.
Andrew Leahy
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