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Speex preprocessor. More...
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Typedefs | |
| typedef struct SpeexPreprocessState_ | SpeexPreprocessState |
| State of the preprocessor (one per channel). | |
Functions | |
| SpeexPreprocessState * | speex_preprocess_state_init (int frame_size, int sampling_rate) |
| Creates a new preprocessing state. | |
| void | speex_preprocess_state_destroy (SpeexPreprocessState *st) |
| Destroys a preprocessor state. | |
| int | speex_preprocess_run (SpeexPreprocessState *st, spx_int16_t *x) |
| Preprocess a frame. | |
| int | speex_preprocess (SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo) |
| Preprocess a frame (deprecated, use speex_preprocess_run() instead) | |
| void | speex_preprocess_estimate_update (SpeexPreprocessState *st, spx_int16_t *x) |
| Update preprocessor state, but do not compute the output. | |
| int | speex_preprocess_ctl (SpeexPreprocessState *st, int request, void *ptr) |
| Used like the ioctl function to control the preprocessor parameters. | |
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).
Definition in file speex_preprocess.h.
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