[Gta04-owner] Low latency audio routing

[Radek Polak]

Hi,
i have now solved half of our problem with sound routing. This command works 
fine for me and routes sound from MIC to UMTS nearly in real time (10uS):

arecord -B 10 -fS16_LE | aplay -B 10 -Dhw:1,0

the important part seems to be the -B parameter which should be buffer time in 
uS.

However i need similar command for other direction. I am now getting underruns 
for any lower values and with high value the sound comes with delay. I am 
going to continue with experiments, but any hints in mean time are highly 
appreciated.

Regards

Radek