Are you using a powered microphone?  If you have a standard PC mic it assumes power comes from the sound card ... the DSK is not a sound card and does not provide phantom power to the mic.  You need to use a powered microphone!  In fact, Radio shack has one that looks a standard PC electret mic and uses 2-3 AAA batteries in the base.

Regards,
Tom Dillon

-----Original Message-----
From: zee_shan_anwar [mailto:z...@yahoo.com]
Sent: Wednesday, June 18, 2003 12:50 AM
To: c...@yahoogroups.com
Subject: [c6x] Help required DSK6711 MIC interface

Hi all,
I am using DS6711 for my audio application development. But,
unfortunately, I am unable to get any data from the MIC interfact of
codec using AD535_read function of DSK6711 board support library.
When I run the confidence test, I get success in all the steps. when
I run the confidence test present in \examples\dsk6711
\board_util\conftest\cnfdsp_nohost, I get the following results for
codec confidence test

CODEC TEST
 Play 1KHz tone......
 Success.....
 Play CD/MIC input.....
 Success.....

however, if i speak in MIC during "Play CD/MIC input", I get nothing
in my speakers. Can anyone please clarify me the problem in my
system i.e. is the MIC interface, codec or the software is
problematic???
Best Regards,
Zeeshan Anwar

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