Hi,
FWIW: while developing a GSTreamer presentation using a BegleBoard (rev C), I noticed the same "tuck" sound. It also occurs a second or two after the GST application exits. I assumed it was some power management code that was disabling the audio codec after it had gone idle, but never looked into it. BeagleBoard also uses TWL4030.
GST command: gst-launch audiotestsrc freq=1000 num-buffers=100 ! alsasink
/proc/version: Linux version 2.6.28-omap1 (ddompe@Aleph) (gcc version 4.3.1 (GCC) ) #2 Thu Mar 5 08:55:58 CST 2009
Code image: http://www.beagleboard.org/~arago/esc/esc2009sj.v12.img.gz
Todd
On Wed, 2009-05-06 at 19:30 +0530, Aggarwal, Anuj wrote:
-----Original Message----- From: Peter Ujfalusi [mailto:peter.ujfalusi@nokia.com] Sent: Wednesday, May 06, 2009 11:03 AM To: Aggarwal, Anuj Cc: linux-omap@vger.kernel.org; alsa-devel@alsa-project.org Subject: Re: Beep sound in the end of audio file
Hello,
On Tuesday 05 May 2009 20:03:57 ext Aggarwal, Anuj wrote:
Hi,
After playing out any audio file on OMAP3 EVM, having TWL4030 codec, I am hearing a beep sound. I have also tried implementing a mute function in which I disabled all the inputs/outputs but still that didn't help.
Any idea how this can be avoided?
I have not heard from this kind of problem so far, which does not mean, that it does not exist ;) Can you describe the beep sound?
[Aggarwal, Anuj] It's kind of a "tuck" sound coming in the end, after 1 or 2 seconds.
After a quick look I can not pin point the soc board file used with the omap3evm board. Is it in the tree?
[Aggarwal, Anuj] No, it is not. Reason being we already have beagle & sdp3430 there, which are both similar to omap3evm, which I pushed. So mine got rejected. We had some discussions on how to handle this scenario but nothing got finalized.
Does the beep happens in these cases also (after stopping it with Ctrl+C): aplay -f dat /dev/zero aplay -f dat /dev/urandom
[Aggarwal, Anuj] Yes, it comes in both the cases.
CC-ing alsa-devel...
Thanks and Regards, Anuj Aggarwal
Platform Support Products Texas Instruments Incorporated
-- Péter
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