Re: Creative SB Live 24bit capture status

[Ferenc Wagner <wferi@tba.elte.hu>]

James Courtier-Dutton <james.dutton@gmail.com> writes:

> I am pleased to announce that Creative have finally sent
> me some information regarding how to enable capture on the
> SB Live 24bit sound card.
>
> I will hopefully be adding support for it to alsa either
> this weekend or next.

Hi James,

thanks for the work, I'm looking forward to exploiting one
such card.  However, the comments in ca0106_main.c confused
me somewhat.  Let me quote:

,----
| Notes on how to capture sound:
| The AC97 is used in the PLAYBACK direction.
|
| The output from the AC97 chip, instead of reaching the
| speakers, is fed into the Philips 1361T ADC.
|
| So, to record from the MIC, set the MIC Playback volume to
| max, unmute the MIC and turn up the MASTER Playback
| volume.
|
| So, to prevent feedback when capturing, minimise the
| "Capture feedback into Playback" volume.
'----

First of all, the above sounds like this card wasn't full
duplex, which probably isn't the case. (?)

Apart from that, there are no MIC or MASTER controls, only
ANALOG/SPDIF Front/Rear/Center/Unknown (without mute
toggles), several recording source selectors (AC97, SPDIF,
I2C, I2C Mixer, whatnot), the Capture feedback and a
Mic/Line in selector.  How should I set all these up,
especially what source should I set 'capture' on?
-- 
Thanks a lot,
Feri.


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