Hello,
 
Thank's for your answer.

Please confirm is it 64Kbyte or 64K sample.
For estimate the latency max for frequency 20480 Hz Stereo 16 bits : 0.800s

for Stereo 16 bits Samples :

-> Transform for Stereo : 65536 / 2 : 32768

-> Transform for 16 bits : 32768 / 2 : 16534 samples

-> Latency Max : (16534 / 20480) : 0.800s

Can you confirm 16534 samples BufferSize max for Alsa ?

Please confirm, that using MONO and not STEREO don't increase the size of 16534 Samples.

And Final Question :

if i modify the driver, do you think that's possible to increase the bufferSize by two or more ?



Regards

Ludovic LABORDE

 

 

 

Trainee IT Developpement
Sophia Antipolis FRANCE
Ludovic.Laborde@fr.thalesgroup.com

THALES UNDERWATER SYSTEMS 

www.thales-underwater.com

 
 



-----Original Message-----
From: Clemens Ladisch [
mailto:clemens@ladisch.de]
Sent: Wednesday, June 28, 2006 1:49 PM
To: Laborde Ludovic
Cc: 'alsa-user@lists.sourceforge.net'
Subject: Re: [Alsa-user] Alsa Buffer Size on Sound Card Intel Ac'97


Laborde Ludovic wrote:
>     Can you explain me, if it's possible for the sound card Intel AC'97
> ICH5/ICH5R to define a alsa buffersize up to 16384 bytes on (16 bits stereo)
> ?

Yes.  Why do you ask?

> Do you think that all functions, reflects the real bufferSize available
> hardware ? or It depend on the audio driver ?

The AC'97 controller doesn't have an inherent buffer size limit.  The
driver uses a default maximum buffer size of 64 KB.


HTH
Clemens