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modem_echo.h File Reference

#include "fir.h"

Go to the source code of this file.

Classes

struct  modem_echo_can_state_t

Functions

 SPAN_DECLARE (modem_echo_can_state_t *) modem_echo_can_create(int len)
 SPAN_DECLARE (void) modem_echo_can_free(modem_echo_can_state_t *ec)
 Request generation of an ADSI alert tone.
 SPAN_DECLARE (int16_t) modem_echo_can_update(modem_echo_can_state_t *ec
 Release a V.8 context.

Variables

int adapt
int16_t tx
int16_t int16_t rx


Detailed Description


Function Documentation

SPAN_DECLARE int16_t   ) 
 

Release a V.8 context.

Process a sample through a modem echo canceller.

Parameters:
ec The echo canceller context.
tx The transmitted audio sample.
rx The received audio sample. eturn The clean (echo cancelled) received sample.

SPAN_DECLARE void   ) 
 

Request generation of an ADSI alert tone.

Log the list of supported modulations.

Parameters:
s The V.8 context.
modulation_schemes The list of supported modulations.

SPAN_DECLARE modem_echo_can_state_t  ) 
 

Create a modem echo canceller context.

Parameters:
len The length of the canceller, in samples. eturn The new canceller context, or NULL if the canceller could not be created.


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