| spandsp 0.0.6
    | 
#include "fir.h"Go to the source code of this file.
| Typedefs | |
| typedef struct echo_can_state_s | echo_can_state_t | 
| Functions | |
| echo_can_state_t * | echo_can_init (int len, int adaption_mode) | 
| int | echo_can_release (echo_can_state_t *ec) | 
| int | echo_can_free (echo_can_state_t *ec) | 
| void | echo_can_flush (echo_can_state_t *ec) | 
| void | echo_can_adaption_mode (echo_can_state_t *ec, int adaption_mode) | 
| int16_t | echo_can_update (echo_can_state_t *ec, int16_t tx, int16_t rx) | 
| int16_t | echo_can_hpf_tx (echo_can_state_t *ec, int16_t tx) | 
| void | echo_can_snapshot (echo_can_state_t *ec) | 
| typedef struct echo_can_state_s echo_can_state_t | 
G.168 echo canceller descriptor. This defines the working state for a line echo canceller.
| void echo_can_adaption_mode | ( | echo_can_state_t * | ec, | 
| int | adaption_mode | ||
| ) | 
Set the adaption mode of a voice echo canceller context.
| ec | The echo canceller context. | 
| adaption_mode | The mode. | 
Referenced by echo_can_init().
| void echo_can_flush | ( | echo_can_state_t * | ec | ) | 
Flush (reinitialise) a voice echo canceller context.
| ec | The echo canceller context. | 
References echo_can_state_s::fir_taps16, and echo_can_state_s::fir_taps32.
| int echo_can_free | ( | echo_can_state_t * | ec | ) | 
Free a voice echo canceller context.
| ec | The echo canceller context. | 
References echo_can_state_s::fir_taps16, and echo_can_state_s::fir_taps32.
| int16_t echo_can_hpf_tx | ( | echo_can_state_t * | ec, | 
| int16_t | tx | ||
| ) | 
Process to high pass filter the tx signal.
| ec | The echo canceller context. | 
| tx | The transmitted auio sample. | 
| echo_can_state_t * echo_can_init | ( | int | len, | 
| int | adaption_mode | ||
| ) | 
Create a voice echo canceller context.
| len | The length of the canceller, in samples. | 
References echo_can_adaption_mode(), echo_can_state_s::fir_taps16, and echo_can_state_s::fir_taps32.
| int echo_can_release | ( | echo_can_state_t * | ec | ) | 
Release a voice echo canceller context.
| ec | The echo canceller context. | 
| int16_t echo_can_update | ( | echo_can_state_t * | ec, | 
| int16_t | tx, | ||
| int16_t | rx | ||
| ) | 
Process a sample through a voice echo canceller.
| ec | The echo canceller context. | 
| tx | The transmitted audio sample. | 
| rx | The received audio sample. | 
References echo_can_state_s::fir_taps16, and echo_can_state_s::fir_taps32.