Curious what happens if you try 48k sampling? On Nov 30, 2014 9:37 PM, "Dien Nguyen" <[email protected]> wrote:
> Hi John, > > Did you solve the issue yet, may you please share how to fix it? We also > tried with 3.18 and the issue is still there. > > Thanks, > Dustin > > On Mon, Dec 1, 2014 at 12:29 PM, John Syn <[email protected]> wrote: > >> >> From: Dien Nguyen <[email protected]> >> Reply-To: "[email protected]" <[email protected]> >> Date: Sunday, November 30, 2014 at 7:14 PM >> To: "[email protected]" <[email protected]> >> Subject: [beagleboard] Audio capture issue with BeagleBone Black and >> Audio Cape Rev B >> >> >> Hi All, >> >> We tried the Audio Cape Rev B with BeagleBone Black. The kernel version >> is 3.14.17 (https://github.com/RobertCNelson/bb-kernel.git branch >> am33x-v3.14) >> >> We was able to play and record via the Audio Cape. If we record and play >> the file via the Audio Cape, it works fine. But when we move the recorded >> file to other machine or play it via the USB Sound Card, the speed of the >> recorded file seems 1.5 time slower than it really is. >> >> On the board, we recorded the audio with >> arecord -t raw -f S16_LE -r 44100 /tmp/1.raw >> >> Then, we playback the file with command >> aplay -t raw -f S16_LE -r 44100 /tmp/1.raw >> >> 1/ On x86 machine, the voice become very slow. If we change the sampling >> rate to 63000, it is played close to the real voice we recorded. >> 2/ Trying with a USB Sound Card plugged directly to the board. >> aplay -t raw -f S16_LE -r 44100 -D plughw:1,0 /tmp/1.raw >> We saw the same issue as seen on x86 machine >> >> It seems that there is something wrong with the sampling rate clock. May >> anyone please give some suggestions >> >> I’ve seen the same problem when recording on the BBB and then playing the >> same file on my Ubuntu Desktop. Not sure why this happens. I’m using >> 3.15.10-bone8. >> >> Regards, >> John >> >> >> Thanks >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/beagleboard/XmMg5DjJvsk/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
