speex_preprocess.h File Reference

Speex preprocessor. The preprocess can do noise suppression, residual echo suppression (after using the echo canceller), automatic gain control (AGC) and voice activity detection (VAD). More...

#include "speex/speex_types.h"

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Defines
#define	SPEEX_PREPROCESS_SET_DENOISE   0
#define	SPEEX_PREPROCESS_GET_DENOISE   1
#define	SPEEX_PREPROCESS_SET_AGC   2
#define	SPEEX_PREPROCESS_GET_AGC   3
#define	SPEEX_PREPROCESS_SET_VAD   4
#define	SPEEX_PREPROCESS_GET_VAD   5
#define	SPEEX_PREPROCESS_SET_AGC_LEVEL   6
#define	SPEEX_PREPROCESS_GET_AGC_LEVEL   7
#define	SPEEX_PREPROCESS_SET_DEREVERB   8
#define	SPEEX_PREPROCESS_GET_DEREVERB   9
#define	SPEEX_PREPROCESS_SET_DEREVERB_LEVEL   10
#define	SPEEX_PREPROCESS_GET_DEREVERB_LEVEL   11
#define	SPEEX_PREPROCESS_SET_DEREVERB_DECAY   12
#define	SPEEX_PREPROCESS_GET_DEREVERB_DECAY   13
#define	SPEEX_PREPROCESS_SET_PROB_START   14
#define	SPEEX_PREPROCESS_GET_PROB_START   15
#define	SPEEX_PREPROCESS_SET_PROB_CONTINUE   16
#define	SPEEX_PREPROCESS_GET_PROB_CONTINUE   17
#define	SPEEX_PREPROCESS_SET_NOISE_SUPPRESS   18
#define	SPEEX_PREPROCESS_GET_NOISE_SUPPRESS   19
#define	SPEEX_PREPROCESS_SET_ECHO_SUPPRESS   20
#define	SPEEX_PREPROCESS_GET_ECHO_SUPPRESS   21
#define	SPEEX_PREPROCESS_SET_ECHO_SUPPRESS_ACTIVE   22
#define	SPEEX_PREPROCESS_GET_ECHO_SUPPRESS_ACTIVE   23
#define	SPEEX_PREPROCESS_SET_ECHO_STATE   24
#define	SPEEX_PREPROCESS_GET_ECHO_STATE   25
#define	SPEEX_PREPROCESS_SET_AGC_INCREMENT   26
#define	SPEEX_PREPROCESS_GET_AGC_INCREMENT   27
#define	SPEEX_PREPROCESS_SET_AGC_DECREMENT   28
#define	SPEEX_PREPROCESS_GET_AGC_DECREMENT   29
#define	SPEEX_PREPROCESS_SET_AGC_MAX_GAIN   30
#define	SPEEX_PREPROCESS_GET_AGC_MAX_GAIN   31
#define	SPEEX_PREPROCESS_GET_AGC_LOUDNESS   33
#define	SPEEX_PREPROCESS_GET_AGC_GAIN   35
#define	SPEEX_PREPROCESS_GET_PSD_SIZE   37
#define	SPEEX_PREPROCESS_GET_PSD   39
#define	SPEEX_PREPROCESS_GET_NOISE_PSD_SIZE   41
#define	SPEEX_PREPROCESS_GET_NOISE_PSD   43
#define	SPEEX_PREPROCESS_GET_PROB   45
#define	SPEEX_PREPROCESS_SET_AGC_TARGET   46
#define	SPEEX_PREPROCESS_GET_AGC_TARGET   47
Typedefs
typedef SpeexPreprocessState_	SpeexPreprocessState
Functions
SpeexPreprocessState *	speex_preprocess_state_init (int frame_size, int sampling_rate)
void	speex_preprocess_state_destroy (SpeexPreprocessState *st)
int	speex_preprocess_run (SpeexPreprocessState *st, spx_int16_t *x)
int	speex_preprocess (SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo)
void	speex_preprocess_estimate_update (SpeexPreprocessState *st, spx_int16_t *x)
int	speex_preprocess_ctl (SpeexPreprocessState *st, int request, void *ptr)

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Detailed Description

Speex preprocessor. The preprocess can do noise suppression, residual echo suppression (after using the echo canceller), automatic gain control (AGC) and voice activity detection (VAD).

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