Tascam US-122L -- how to configure S24_3LE sample format?

[joeyh]

Trying to help a friend get his Tascam US-122L working with audacity.

He has audacity 1.3.7, alsa-base 1.0.20, linux 2.6.30. alsa can see the USB audio device and I can record at the command line using this:

"arecord -MDusb_stream:1 -fS24_3LE -r44100 -c2 --period-size=640"

However, when I configure audacity to use this device, it fails to record,
logging:

Couldn't configure usb_stream
: Invalid argument

IIRC I get the same error message from arecord if I leave off the -f parameter. I have audacity configured to record at rate 44100, and 24 bit, but it does not offer exactly the S24_3LE sample format (whatever
that is), and that seems to be the one needed by the Tascam.

Just to be complete, here is the .asoundrc I'm using with the Tascam:

pcm.!usb_stream {
@args [ CARD ]
@args.CARD {
type string
default "1"
}

type usb_stream

card $CARD
}

[steve]

Try using Audacity 1.3.10 from cvs. This may help as there have been several improvement since 1.3.7 (sorry - no guarantees)