Dear Sir
You know there exists self-excitation in Microphone-Speaker-Microphone application.
I add a 5-band EQ, the center fre are 50, 150, 400, 1K, 5K. I try to lower down some center fre to suppress the excitation. It helps a little, but not solve the problem completely. Do you have a algorithm to solve this self-excitation problem, or any suggestion?
Thanks,
Jackie