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ALSAmixer Audio In Jack - Beagleboard XM

Brian Hensley

Does anyone know what options need to be enabled to properly record audio through the Line In Jack on the Beagleboard XM. I have a Rev C board and I have enabled options in alsamixer and been able to hear audio from a file and through my Line In by enabling Loopback modes. But i'm having problems when I try to run "arecord" from the jack. All I get is a blank recording. Even though when loopback mode is enabled I can hear my audio from the Jack. Any suggestions?

  • 0

    After much searching on the internet....weeks before I posted this other post today I found what worked!

    Beagleboard XM has the AUXL/R connected to audio in jack.
So you need a line-in type of input, not a mic.

Then through Alsamixer or commands:
amixer sset 'Analog' 1 # 6dB amplification
amixer sset 'Analog Left AUXL' cap
amixer sset 'Analog Right AUXR' cap
amixer sset 'TX1' 'Analog'
amixer sset 'TX1 Digital' 5 # 5db amplification

arecord -d 30 -f cd -D hw:0,0 -t wav /home/ubuntu/Dekstop/recording.wav

    You can play with the gains, if they are not correct.


    I was able to take the following and make sure my "DAC Voice Analog Downlink" and "DAC Voice Digital Downlink" were both muted. This will help with recording to the beagleboard XM input.


    I was also running Ubuntu 11.10 kernel 3.1.5 from www.RCN-EE.com  Now i'm going to start work on making Darkice work!

     

     

  • 0
    Prodigy 240 points

    can you send the code to my mail id kaikeraut@gmail.com

    thanx in advance