Date: Sun, 30 Nov 2014 19:02:43 -0800 From: nguyentienhoangd...@gmail.com To: beagleboard@googlegroups.com Subject: [beagleboard] Audio capture issue with Audio Cape Rev B
Hi All, I tried to test the audio cape Rev B on BeagleBone Black board, the linux kernel used is 3.14.17 (https://github.com/RobertCNelson/bb-kernel.git, branch am33x-v3.14) I can play and capture the sound normally with the Audio Cape. File recorded via the Cape is played fine with the Cape output. But thing went wrong when we play the recorded file else where. On the board, I record audio with arecord commandarecord -t raw -f S16_LE -r 44100 /tmp/1.raw If we play back the recorded file on the board, it is okaplay -t raw -f S16_LE -r 44100 /tmp/1.raw But when I copied the recorded file to x86 machine, the speed of the audio changed. The recorded voice is played 1.5 time slower than it actually is. I tried the same test with USB sound card (record the audio via the Audio Cape and playback via the USB Sound Card), the playback got the same issue that was seen on x86 machine. It seems like there is something wrong with the clocking. May you please give any suggestions. 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 beagleboard+unsubscr...@googlegroups.com. 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
