[alsa-devel] Noise at end of audio file

[Lopez Cruz, Misael]

Checked with some silence data and noise still present. Using aplay with
"-M" (mmap) no noise is listen.

Misael 

-----Original Message-----
From: Takashi Iwai [mailto:tiwai at suse.de] 
Sent: Wednesday, August 22, 2007 10:02 AM
To: Lopez Cruz, Misael
Cc: alsa-devel at alsa-project.org
Subject: Re: [alsa-devel] Noise at end of audio file

At Wed, 22 Aug 2007 09:31:25 -0500,
Lopez Cruz, Misael wrote:
> 
> I'm using aplay application for playback, the platform I'm working 
> with is ti-omap.
> 
> Regards,
> Misael
> 

Hm, then it's hard to tell...  Check whether the noise occurs after
playing just a silence data.  This reduces the possibility of "junk
data" in the last playback period.

If this happens with silence, then the problem is likely the hardware
parameter change.


Takashi

> -----Original Message-----
> From: Takashi Iwai [mailto:tiwai at suse.de] 
> Sent: Wednesday, August 22, 2007 7:23 AM
> To: Lopez Cruz, Misael
> Cc: alsa-devel at alsa-project.org
> Subject: Re: [alsa-devel] Noise at end of audio file
> 
> At Mon, 20 Aug 2007 10:44:14 -0500,
> Lopez Cruz, Misael wrote:
> > 
> > Hi,
> >  
> > I listen some noise at the end of playback of an audio file, with
some
> 
> > debug I noticed that the noise appears in the last two period of the

> > playback. I tried changing the minimum number of period (it was 16
and
> 
> > changed to 32) but the noise appears even before. Any idea what
could 
> > be wrong?
> 
> With which apps and which device does this happen?
> 
> 
> Takashi
>