16 Dec
2002
16 Dec
'02
6:35 a.m.
On Sun, 2002-12-15 at 20:14, leo zhu wrote:
Hi, Haakmat,
I'm so glad to see your reply. But I'm still wondering
how I can implement the full duplex operation on sound
card, i.e. playback and record audio on the same card
at same time. I don't think it's a good idea that
reopen the device when switch between reading and
writting, because I found it sometime took much time
to open the device and that means the quality wouldn't
be good. Do u have another solution to it? Anybody
have experience with it ? I really need suggestion
about it and I also believe there must be some tricks
which I havn't understood.
Thanks a lot anyway. This is my first question in this
group and it's my pleasure to get your help.
leo.
You may want to look into ALSA (http://www.alsa-project.org) which is
the new Linux sound architecture. Also, it would probably be good to
make sure your audio card is actually capable of full duplex and that
this feature really does work in Linux (with the drivers you decide to
code for). I can't think of any quick and easy programs to test full
duplex (anyone else have any ideas?). Good luck.
Josh Green