On Thu, 23 Mar, 2006 at 09:06PM +0100, Martin Kuball spake thus: > Am Thursday, 23. March 2006 09:13 schrieb james@xxxxxxxxxxxxxxx: > > On Wed, 22 Mar, 2006 at 09:38PM +0100, Martin Kuball spake thus: > > > 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. > > Well, I'm not a musician or audio specialist. So I'm not really sure > if droning is the right word. But ... > > > > 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? I *think* so. I'm not an expert, so it might be a little more complex than that. This is why I don't like XMMS monkeying with it when I change the volume - everything goes up and down with it. James > Martin > -- "I'd crawl over an acre of 'Visual This++' and 'Integrated Development That' to get to gcc, Emacs, and gdb. Thank you." (By Vance Petree, Virginia Power)
