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New common FSK implementation, replaces all individual implementations

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This commit is contained in:
Andreas Eversberg
2017-08-05 10:41:23 +02:00
parent ffd3b848e1
commit 534411d660
21 changed files with 785 additions and 1117 deletions
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12
src/common/fm_modulation.h
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@@ -1,3 +1,4 @@
#include "../common/iir_filter.h"
typedef struct fm_mod {
double samplerate; /* sample rate of in and out */
@@ -7,8 +8,9 @@ typedef struct fm_mod {
double *sin_tab; /* sine/cosine table for modulation */
} fm_mod_t;
void fm_mod_init(fm_mod_t *mod, double samplerate, double offset, double amplitude);
void fm_modulate(fm_mod_t *mod, sample_t *samples, int num, float *buff);
int fm_mod_init(fm_mod_t *mod, double samplerate, double offset, double amplitude);
void fm_mod_exit(fm_mod_t *mod);
void fm_modulate_complex(fm_mod_t *mod, sample_t *frequency, int num, float *baseband);
typedef struct fm_demod {
double samplerate; /* sample rate of in and out */
@@ -19,6 +21,8 @@ typedef struct fm_demod {
double *sin_tab; /* sine/cosine table rotation */
} fm_demod_t;
void fm_demod_init(fm_demod_t *demod, double samplerate, double offset, double bandwidth);
void fm_demodulate(fm_demod_t *demod, sample_t *samples, int num, float *buff);
int fm_demod_init(fm_demod_t *demod, double samplerate, double offset, double bandwidth);
void fm_demod_exit(fm_demod_t *demod);
void fm_demodulate_complex(fm_demod_t *demod, sample_t *frequency, int length, float *baseband, sample_t *I, sample_t *Q);
void fm_demodulate_real(fm_demod_t *demod, sample_t *frequency, int length, sample_t *baseband, sample_t *I, sample_t *Q);