31 Jul
2003
31 Jul
'03
7:06 p.m.
On Wednesday, July 30, 2003, at 04:56 PM, Shiming Dong wrote:
I have one question: I was supposed to implement a program to detect a specific marker tone. But my problem is how to know the frequency of each frame?
You can look at the subband samples in frame.sbsample (before/without synthesis, which is not required) to perhaps evaluate the presence of your marker tone.
See this thread to get an idea how the subband samples relate to frequency:
http://www.mars.org/mailman/public/mad-dev/2003-July/000860.html http://www.mars.org/mailman/public/mad-dev/2003-July/000869.html
--
Rob Leslie
rob@mars.org