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 <poch...@shiny.it> To: S. Aguinaga <sa...@yahoo.com> Cc: alsa-user@lists.sourceforge.net Sent: Wednesday, June 24, 2009 4:19:41 PM Subject: Re: [Alsa-user] .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...@yahoo.com> 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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