In case this helps anyone else, I solved part of my problem...
On Sun, 2011-02-19 at 23:00 -0800, Mr Dean Peterson wrote:
> Alsamixer shows multiple Capture items for my sound card. I can
> record from the first one, but how do I record from the other 2?
> ...
> Alsamixer reports my sound card as HDA Intel, chip Analog Devices
> AD1988B.
I found I needed to specify an ALSA subdevice. I had already done
the following on alsamixer's F4 [Capture] screen:
- Set non-zero capture volumes
- Hit spacebar on the capture items to enable them
- Chosen an input source on each input source item
At least those were the setting on my Analog Devices AD1988B card.
With those alsamixer F4 settings set, the following commands all
captured off of the first capture item ("Capture"):
$ arecord test2.wav
$ arecord -D plughw test.wav
$ arecord -D plughw:0,0,0 test2.wav
According to...
http://alsa.opensrc.org/.asoundrc#The_naming_of_PCM_devices
...the 0,0,0 means card 0, device 0, subdevice 0.
To get arecord to record from other capture items, I had to
specify the correct subdevice. For example, the following command
recorded from the second capture item ("Capture 1"):
$ arecord -D plughw:0,0,1 test2.wav
And this command recorded from the third capture item ("Capture 2"):
$ arecord -D plughw:0,0,2 test2.wav
On Sun, 2011-02-19 at 23:00 -0800, Mr Dean Peterson wrote:
> Eventually I would like to record multiple tracks at the same time
I recorded from multiple input sources (with ardour, incidentally)
by using JACK's alsa_in utility to expose the additional subdevices
to JACK...
BUT
The recording was out of sync, so even though my commercial
AD1988B sound card technically does have 3 stereo capture streams,
jose was correct when he said I would probably need at least
a semi-pro audio card...
On Sun, 2011-02-20 at 19:44 +0100, jose wrote:
> if you need to do more things with audio, you have to move at least to
> "semiprofessional" (i mean, "not for home entertainment surround 7.1
> extreme gaming cinema experience") audio devices. you will find a lot of
> 4in+4out (for example) audio devices at a reasonable prize.
Thank you everyone for your help.
Dean
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