Subject: Re: [linux-audio-dev] hdsp output, and the lack of
From: DuWayne R Holsbeck (drh_AT_niptron.com)
Date: Wed Jun 12 2002 - 17:49:36 EEST
On Wed, 2002-06-12 at 08:38, Paul Davis wrote:
> Puzzling. Very puzzling. Can you run some input into the system and
> see if the Input Peak readings change? They should. Read them using:
>
> amixer -c N cget numid=13
>
> this will read the input peak value for channel 1 over and over
> again. i'd like to see that this at least is working. "N" is the card
> number for your hdsp.
>
Ill do that this afternoon. If your interested I can put the box online
for you to look at.
> I also noted
> >that, in alsamixer, there dose not seem to be any way to mute or unmute
> >the channels, is this normal?
>
> i don't know. i've never done this in alsamixer for any of my other
> cards. is there some standard way to do this?
On my ice1712 cards there is a "mm" marking on the inputs, when you
select that channel, and hit "m" it toggles the mute setting
>
> The line out channels are enabled by the driver, but they represent a
> separate mix destination that has all source gains set to zero, so you
> don't hear anything by default. I have considered changing this so
> that the default is to hear everything (all input channels and all
> playback streams). What do you think?
a seprate monitor, consisting of all channels would be good, a mixed
output would be better ;-)
>
> There is access to the internal mixer, but because its a radical new
> design for ALSA, its non-standard and none of the existing alsa
> programs can control it. There are on the order of 1500 possible mixer
> controls, and we are still debating (though its quiet right now) how
> best to represent such a thing within ALSA. its possible to write s/w
> that can control the mixer right now, i just haven't done it.
>
> Control over the mixer is needed to modify what comes out of the line
> out channels, obviously.
>
> --p
>
-- I have a switch in my apartment that doesn't do anything. Every once in a while I turn it on and off. On and off. On and off. One day I got a call from a woman in France who said "Cut it out!" -- Steven Wright
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