23 Mar
2006
23 Mar
'06
4:07 p.m.
Am Thursday, 23. March 2006 09:13 schrieb james(a)dis-dot-dat.net:
On Wed, 22 Mar, 2006 at 09:38PM +0100, Martin Kuball
spake thus:
Well, I'm not a musician or audio specialist. So I'm not really sure
if droning is the right word. But ...
Hi!
I'm using onboard sound with NVidia CK804 chip with the
snd_intel8x0 alsa driver and have the problem that some of my
music sounds really bad when played.
Let me give an example. I have a cd with a song I like. It sounds
good when played directly from the CD via the internal audio
connector. Now I rip the song with cdparanoia to a wav file. When
I play this file it sounds realy bad. I don't know how to
describe it but I think it's some kind of droning. When I play
the file using my usb audio device it's sounds fine.
To a certain extent I have this bad quality with a lot of my
music files. But what I notices is that I have never had this
with sound in a video. Now I wonder if this might be some problem
with music having (normally) 44100 Hz sample rate and video sound
48000 Hz. Is this possible? Maybe even a known problem?
Sample rate copnversion shouldn't be the problem - the software
you're playing it with should do all this for you.
What it could be is volumes. Admittedly "droning" doesn't sound
like a clipping problem, but what you hear as droning, I might
describe differently.
Anyway, fire up alsamixer and start playing with your master and
PCM volumes. If it doesn't change anything, then at least it's
another thing off the list of possible causes.
You were totally right. It was a mixer problem. I had the PCM set to
its max value. Lowering it somewhat made the bad sound disappear.
Thank's for the hint. By the way, what stage of the sound processing
does the PCM affect? I guess it's aplied to digital values right
before DA conversion. Am I right?
Martin