search for: speex_echo_get_impulse_response

...x_echo.h 2007-10-09 13:08:15.000000000 +0200 +++ get_impulse/include/speex/speex_echo.h 2008-02-12 23:58:11.000000000 +0100 @@ -51,6 +51,14 @@ /** Get sampling rate */ #define SPEEX_ECHO_GET_SAMPLING_RATE 25 +/* Can't set window sizes */ +/** Get size of impulse response (int32) */ +#define SPEEX_ECHO_GET_IMPULSE_RESPONSE_SIZE 27 + +/* Can't set window content */ +/** Get impulse response (int32[]) */ +#define SPEEX_ECHO_GET_IMPULSE_RESPONSE 29 + /** Internal echo canceller state. Should never be accessed directly. */ struct SpeexEchoState_; diff -ubBwr clean/libspeex/mdf.c get_impulse/libspeex/mdf.c --- cle...

Hi, I would like to compute the inverse FFT of the MDF coefficients. I have noticed that some coefficients are obviously missing since I do not see the mirror effect, neither find the purely real frequency 0 coefficent that have to be found for a "real" signal. I guess the frequency 0 coefficient is 0 (average energy 0), but how should I do the mirroring and how many coefficients should

...AEC to handle. If I could use the current delay estimate from Speex to detect when this was starting to happen, I could correct for it automatically. Is there a stable delay estimate I can watch to detect this condition? Or perhaps a way this could be determined given the information provided by SPEEX_ECHO_GET_IMPULSE_RESPONSE? Thanks, Stuart Anderson