Thank you Giuliano!!
BTW: do you have a recommendation to test/check the maximum output level of the Layla3G. The specs say that is capable of 114dB( A weighted) ... I used alsamixer to turn up the volume all the way up for this device, but when I measure the output ... I got something like 300mV(rms) and I would expect this to be about 6.5-7.5Vrms (max).
// Thank you again
From: Giuliano Pochini <pochini@xxxxxxxx>
To: S. Aguinaga <sa_jr@xxxxxxxxx>
Cc: alsa-user@xxxxxxxxxxxxxxxxxxxxx
Sent: Wednesday, June 24, 2009 4:19:41 PM
Subject: Re: .asoundrc for layla3g && aplay error: set_params:959: Channels count non available
On Tue, 23 Jun 2009 16:27:34 -0700 (PDT)
"S. Aguinaga" <sa_jr@xxxxxxxxx> wrote:
> Hello,
>
> *A wave file plays on the built-in audio "aplay -v waveoutput.wave" without issues, but if I route this to my Layla3G card using the command:
> "aplay -v -D layla3g waveoutput.wave" this is the output/error message:
>
> Playing WAVE 'waveoutput.wave' : Signed 16 bit Little Endian, Rate 22050 Hz, Mono
> aplay: set_params:959: Channels count non available
It happens because the card does not support mono S16_LE. It must be stereo.
> I've searched the forums and while I have found a work-around, I haven't found a satisfactory answer online that points to my error ( which I presume is with my .asoundrc file). Here is my ~/.asoundrc file (bellow), to it I added the "channels 2" line and rebooted the system, but it still fails.
There's no need to reboot: .asoundrc is read each time an app is loaded.
> ** If I try the following, it works: aplay -D plughw:1,0 waveoutput.wave
Yes, with plug it either converts the data to stereo or S32_LE.
> *** The purpose of this task is to figure out what the maximum output voltage of the Echo Layla3G is. Do any of you have a suggestion to accomplish this in a more elegant way?
>
>
> ## my .asoundrc file ######################
> # soundcard and device to use
> pcm.layla3g {
> type hw
> card 1
> device 0
> channels 2
> }
Try this:
pcm.layla3g {
type plug
slave.pcm "hw:1"
}
ctl.gina3g {
type hw
card 0
}
--
Giuliano.
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