search for: speex_echo_init_st

...; > Are you by any chance using an insane sampling rate and/or tail length. > Try a sampling rate of 8000 Hz, 128-sample frame size and 1028-sample > tail length. In my appliation, the sampling rate is 8000 Hz, and time stamp is 20ms, doesn't it mean I should initialize echo_state like speex_echo_init_state(160,n*160)? > > > I've defined the FIXED_POINT macro. Is there anyway to do some > > optimization? > > Probably. With the params above, the AEC should be able to run in > real-time on an ARM CPU. > > Jean-Marc > >

...pling rate and/or tail length. > >> Try a sampling rate of 8000 Hz, 128-sample frame size and 1028-sample > >> tail length. > > In my appliation, the sampling rate is 8000 Hz, and time stamp is > > 20ms, doesn't it mean I should initialize echo_state like > > speex_echo_init_state(160,n*160)? > > That's fine -- as long as n is reasonable, let's say in the order of 8. > Are you using just the echo canceller or the preprocessor too (try just > the echo canceller). > > Jean-Marc >

Hello all, Today I tried speex echo cancellation on my VoIP application running on a windows mobile based PDA (OMAP1510 168MHz). The result is disappointing: it takes 150-250 ms to do echo cancellation (by calling speex_echo_capture() ) for a 20 ms frame! I've defined the FIXED_POINT macro. Is there anyway to do some optimization? Nick