problem with MU -LAW

problem with MU -LAW

[mahendra sp]

hi, alsa  people,

   I have wriiten the application which realises full duplex.But 
there is playback buffer underrun proble. The buffer tries to read 
the value but -ve value. After writink the -ve value for some 
timesay 3 minutes, it becomes alright. again after some time 
buffer under run occurs. whts the  problem . how to over come it. 
is it dependednt on periodsize and buffersize?

   and  also i want to implement G711. does it happen 
automatically by using snd_pcm_format_mulaw? if not how to do 
it?

thanks, regards,
mahendra
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Re: problem with MU -LAW

[James Courtier-Dutton]

mahendra sp wrote:
> 
> hi, alsa  people,
> 
>   I have wriiten the application which realises full duplex.But there is 
> playback buffer underrun proble. The buffer tries to read the value but 
> -ve value. After writink the -ve value for some timesay 3 minutes, it 
> becomes alright. again after some time buffer under run occurs. whts 
> the  problem . how to over come it. is it dependednt on periodsize and 
> buffersize?
> 
>   and  also i want to implement G711. does it happen automatically by 
> using snd_pcm_format_mulaw? if not how to do it?
> 
> thanks, regards,
> mahendra
> ___________________________________________________
G.711 uses two audio formats. A-Law (Europe), and mu-Law(USA).

So, if one talks about A-Law and mu-Law, one is talking about G.711

Cheers
James




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