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speex_echo.h File Reference

Echo cancellation. More...

Typedefs
typedef struct SpeexEchoState_	SpeexEchoState
	Internal echo canceller state.
Functions
SpeexEchoState *	speex_echo_state_init (int frame_size, int filter_length)
	Creates a new echo canceller state.
void	speex_echo_state_destroy (SpeexEchoState *st)
	Destroys an echo canceller state.
void	speex_echo_cancellation (SpeexEchoState st, const spx_int16_t rec, const spx_int16_t play, spx_int16_t out)
	Performs echo cancellation a frame, based on the audio sent to the speaker (no delay is added to playback ni this form)
void	speex_echo_cancel (SpeexEchoState st, const spx_int16_t rec, const spx_int16_t play, spx_int16_t out, spx_int32_t *Yout)
	Performs echo cancellation a frame (deprecated)
void	speex_echo_capture (SpeexEchoState st, const spx_int16_t rec, spx_int16_t *out)
	Perform echo cancellation using internal playback buffer, which is delayed by two frames to account for the delay introduced by most soundcards (but it could be off!)
void	speex_echo_playback (SpeexEchoState st, const spx_int16_t play)
	Let the echo canceller know that a frame was just queued to the soundcard.
void	speex_echo_state_reset (SpeexEchoState *st)
	Reset the echo canceller to its original state.
int	speex_echo_ctl (SpeexEchoState st, int request, void ptr)
	Used like the ioctl function to control the echo canceller parameters.

Detailed Description

Echo cancellation.

Definition in file speex_echo.h.