Dear Clemens
Could you please provide any inputs w.r.t the below queries
Kindly do the needful as early as possible
Many Thanks in Advance,
________________________________________ From: Srinivasan S Sent: Saturday, March 28, 2015 8:13 AM To: Clemens Ladisch Cc: alsa-devel@alsa-project.org; linux-audio-dev@lists.linuxaudio.org Subject: Re: Fw: [alsa-devel] Using loopback card to Connect GSM two way call to the real sound card UDA1345TS
Dear Clemens,
Thanks a lot for your inputs w.r.t the below issue, Now I tried playing 48Khz mono that works fine,
Could you please clarify the following points
1) CPU consumption is 18%, with above asound.conf & the app alsa_loopback_min_mono.c for establishing my GSM two way call (ie., VINR to VOUTR & VINL to VOUTL) , this is very huge & I want to reduce this CPU consumption drastically, Is there any other ways in alsa where I can do this two way GSM call (ie., VINR to VOUTR & VINL to VOUTL) without using alsa_loopback_min_mono.c application
Could you please let me know if there is anything that can be done in using alsa plugins in order to reduce CPU consumption???
2) And am hearing echo, when I do GSM calls when using the above attachd asound.conf & the app alsa_loopback_min_mono.c, could you please help me out is there any options to do echo cancellation in alsa??
3)Am trying to completely understand the above attched asound.conf, but am not still very clear w.r.t the understanding of bindings in alsa plugins as am confused, Could you please clarify the doubt that
i) Does the below lines correspond to VINL to VOUTL or VINL to VOUTR??
bindings { 0 1 }
ii) & similarly does the below lines correspond VINL to VOUTL??
bindings { 0 0 }
iii) similarly does the correspond VINL to VOUTL??
bindings.0 0
iv) similarly does the correspond VINL to VOUTR or VINR to VOUTR??
bindings.0 1
Kindly do the needful as early as possible, as only this is pending from my side w.r.t AUDIO in my project
Once again really appreciate & Thanks a lot for your prompt responses
Many Many Thanks in advance again,
________________________________________ From: Clemens Ladisch clemens@ladisch.de Sent: Tuesday, March 10, 2015 4:20 PM To: Srinivasan S Cc: alsa-devel@alsa-project.org; linux-audio-dev@lists.linuxaudio.org Subject: Re: Fw: [alsa-devel] Using loopback card to Connect GSM two way call to the real sound card UDA1345TS
Srinivasan S wrote:
$ aplay -f dat -D VOUTL new.wav Playing WAVE 'new.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo aplay: set_params:1087: Channels count non available
You are trying to play a two-channel file on a single-channel device.
Regards, Clemens