[alsa-devel] Bad sound quality

Adrian Knoth adi at drcomp.erfurt.thur.de
Mon Jan 31 11:42:39 CET 2011

On Mon, Jan 31, 2011 at 10:43:55AM +0100, Stanislav Kučera wrote:


> In linux compared to windows the sound quality is much worse. I have tried  

Is this some kind of trolling? Please record the output of the same
signal at unity gain under Linux and Windows, preferrably via a digital
connection, align the streams and check for any differences, especially
in the resulting spectra.

It might be possible there's some poor resampling or erroneous datatype
conversion in your signal chain, probably in userspace. This would
explain why it occurs on all your cards.

What you can try: playback of a lossless (read: wav, flac) file directly
to ALSA without dmix, pulseaudio, phonon or whatever. This is your
baseline for comparison. If this "really sounds worse than Windows" (I
could hardly type this undifferentiated phrase), then it's some DSP code
on the Windows side.


mail: adi at thur.de  	http://adi.thur.de	PGP/GPG: key via keyserver

More information about the Alsa-devel mailing list