Subject: Re: [linux-audio-dev] Sound distortion with certain players/ac3 @ 48kHz
From: Tom Browne (lad_AT_tbrowne.demon.co.uk)
Date: Fri Dec 07 2001 - 03:49:08 EET
Hi,
It's quite likely that the AC-3 decoder is at fault. Some of the earlier
decoders were utterly terrible in quality, with all sorts of weird
distortion (comparing the output of, say, AC3PLAY to Xing or PowerDVD made
for interesting listening/viewing)...
- Tom.
----- Original Message -----
From: "Peter Surda" <shurdeek_AT_panorama.sth.ac.at>
To: <linux-audio-dev_AT_music.columbia.edu>
Sent: Friday, December 07, 2001 12:43 AM
Subject: [linux-audio-dev] Sound distortion with certain players/ac3 @ 48kHz
Hi guys!
I hope this is not offtopic, but since it is about audio stuff under linux
it
it should be ok.
So lemme describe the problem. Certain players, most notably vlc, produce
slightly distorted sound when playing 48kHz audio (like audiotracks on movie
DVDs). I don't know how to describe this distortion, I'd say it sounds
"tinny". My soundcard is SB-Live, but as far as I remember it also happens
with my onboard via82cxxx. I'd check but it is a little difficult to get
behind the box to replug the jacks.
When I play DVDs e.g. with xine, sound is ok, but when I play it with vlc, I
get this distortion. Right now I found other thing, I tested a "Das Boot"
DVD.
It has 1 mpeg and 1 ac3 audiotrack. When I select the mpeg, vlc sounds ok,
but
when I select ac3 it is distorted again. I asked in vlc-devel mailing list
but
they probably don't feel it's important or are busy (you know how it goes).
<snip>
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