From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Ujfalusi Subject: Re: Beep sound in the end of audio file Date: Thu, 7 May 2009 08:48:25 +0300 Message-ID: <200905070848.25904.peter.ujfalusi@nokia.com> References: <5A47E75E594F054BAF48C5E4FC4B92AB0305559FCC@dbde02.ent.ti.com> <5A47E75E594F054BAF48C5E4FC4B92AB030555A348@dbde02.ent.ti.com> <1241619589.8928.2038.camel@sax-lx.fischerfamily.org> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1241619589.8928.2038.camel@sax-lx.fischerfamily.org> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: "todd.fischer@ridgerun.com" Cc: "Aggarwal, Anuj" , "alsa-devel@alsa-project.org" , "linux-omap@vger.kernel.org" List-Id: linux-omap@vger.kernel.org On Wednesday 06 May 2009 17:19:49 ext Todd Fischer wrote: > 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 in= to > it. BeagleBoard also uses TWL4030. > > GST command: gst-launch audiotestsrc freq=3D1000 num-buffers=3D100 ! alsa= sink > > /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 The "tuck" is coming from the codec, when it is powered down (in the old = twl4030 codec found in omap-2.6.28 branch of linux-omap). But, it still happens with the latest version, when the codec is muted only. I can observe the "tuck" on Headset output, but not on the PreDrive... The Headset enable and disable is implemented according to the TRM, but it = seams that additional tweaking is needed.. -- = P=E9ter