tone_generate.c File Reference

#include <inttypes.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <fcntl.h>
#include "floating_fudge.h"
#include "spandsp/telephony.h"
#include "spandsp/dc_restore.h"
#include "spandsp/complex.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.
tone_gen_state_t *	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

References dds_phase_rate(), dds_phase_ratef(), dds_scaling_dbm0(), dds_scaling_dbm0f(), tone_gen_descriptor_t::duration, tone_gen_descriptor_t::repeat, and tone_gen_descriptor_t::tone.

Referenced by adsi_tx_init(), and r2_mf_tx_init().