tone_generate.c File Reference

#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <fcntl.h>
#include "spandsp/telephony.h"
#include "spandsp/dc_restore.h"
#include "spandsp/dds.h"
#include "spandsp/tone_generate.h"

Defines
#define	M_PI   3.14159265358979323846264338327
#define	ms_to_samples(t)   (((t)*SAMPLE_RATE)/1000)
Functions
void	make_tone_gen_descriptor (tone_gen_descriptor_t *s, int f1, int l1, int f2, int l2, int d1, int d2, int d3, int d4, int repeat)
	Create a tone generator descriptor.
void	tone_gen_init (tone_gen_state_t *s, tone_gen_descriptor_t *t)
int	tone_gen (tone_gen_state_t *s, int16_t amp[], int max_samples)

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Detailed Description

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Function Documentation

void make_tone_gen_descriptor (  tone_gen_descriptor_t *  s, int  f1, int  l1, int  f2, int  l2, int  d1, int  d2, int  d3, int  d4, int  repeat )

Create a tone generator descriptor. Create a tone generator descriptor Parameters: s  The descriptor f1  The first frequency, in Hz l1  The level of the first frequency, in dBm0 f2  0 for no second frequency, a positive number for the second frequency, in Hz, or a negative number for an AM modulation frequency, in Hz l2  The level of the second frequency, in dBm0, or the percentage modulation depth for an AM modulated tone. d1  x d2  x d3  x d4  x repeat  x

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