Subject: [linux-audio-user] AC97 Compliant cards that do not resample to 48khz when playing CDs (maybe slightly OT)
From: Louis Lam (lshoujun_AT_yahoo.com)
Date: Fri Sep 24 2004 - 07:58:01 EEST
Hello All,
Just out of curiousity, are there any AC97 compliant cards that does not resample everything to
48khz? I've read about this problem on SBLive cards.
Lately I've been looking through many older sound cards e.g creative vibra, turtle beach
montegro(au8820b2). Most of them have an ac97 compliant codec chip on board. Does it necessarily
mean that the presence of this chip conclude that it will try to resample at 48khz?
Some cards have another codec on board, e.g. the "Gainward Hollywood_AT_home" (which by the way my
system was able to detect and kind-of works, alsamixer and all, but have not use the advanced
features yet)has an additional cs4341A-RS codec which handles the last 2 channels that the VIA
VT1616(ac97, chan1-6) does not.
Given that, how do you:
1. Find out whether the line-in/mic-in can use another codec, will it be:
(A)hardwired by design or
(B)can it be changed through alsa configuration e.g ".asoundrc" to do that.
2. If it is in the case of (A), then it sounds like to best choice is to record at 48Khz, mix then
downsample to 44khz when you want to burn to CD. If this is the case, how will this downsampling
affect the quality of the sound? Is there any way to overcome or improve it?
Thanks very much,
Louis
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