James Courtier-Dutton wrote:
> lemmel wrote:
>> Le jeudi 02 novembre 2006 09:44, vous avez écrit :
>>> Were there samples missing at the beginning or at the end?
>> At the end
>>>> and even randomly truncated,
>>> What do you mean with "randomly"?
>> In order to lighten, I will take an example : a 3 secondes sound file.
>> 0------------------------------>1.5---------------------------------------->3s
>>
>> a beep on a channel a beep on the other channel
>>
>> the sound can be truncated at this time position : 1.5, 2, even at 1.
>>
>> It is rather difficult to be accurate for the real duration is small
>> (the wav file is available at
>> http://maleelma.free.fr/lemmel/test.wav.bz2), and I am focusing on the
>> choice of a sound system.
>>> What sound card/kernel version/ALSA version are you using?
>> see an another post of mine.
>>
>
> We, unless this is actually reported to the alsa bug tracker at
> http://alsa-project.org/ it might not get fixed or even investigated
> further.
>
>
>
This is probably an application problem. There is a special case that if
the application does not write a full period to the sound card before
calling snd_pcm_drain(), the last samples(incomplete period) written
might not be played.
The recommended way to use the sound card drivers is to use a callback
method. The callback will ask for a period at a time, so it is made
clear to the application writer that they HAVE to send an entire period.
This might help you.
James
James
Received on Fri Nov 3 00:15:05 2006
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