bpmdsp/bpm_dsp.h File Reference

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Detailed Description

libbpm digital signal processing routines

Definition in file bpm_dsp.h.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "bpm/bpm_defs.h"
#include "bpm/bpm_messages.h"
#include "bpm/bpm_nr.h"
#include "bpm/bpm_wf.h"

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Data Structures
struct	filterrep_t
struct	filter_t
Defines
#define	BESSEL
#define	BUTTERWORTH
#define	CHEBYSHEV
#define	RAISEDCOSINE
#define	RESONATOR
#define	GAUSSIAN
#define	BILINEAR_Z_TRANSFORM
#define	MATCHED_Z_TRANSFORM
#define	NO_PREWARP
#define	CAUSAL
#define	ANTICAUSAL
#define	NONCAUSAL
#define	GAUSSIAN_SIGMA_BW
#define	LOWPASS
#define	HIGHPASS
#define	BANDPASS
#define	BANDSTOP
#define	NOTCH
#define	ALLPASS
#define	FIR
#define	IIR
#define	MAXORDER
#define	MAXPZ
#define	FILT_EPS
#define	MAX_RESONATOR_ITER
#define	FFT_FORWARD
#define	FFT_BACKWARD
Functions
EXTERN filter_t *	create_filter (char name[], unsigned int options, int order, int ns, double fs, double f1, double f2, double par)
EXTERN int	apply_filter (filter_t *f, doublewf_t *w)
EXTERN void	print_filter (FILE *of, filter_t *f)
EXTERN void	delete_filter (filter_t *f)
EXTERN int	filter_step_response (filter_t *f, doublewf_t *w, int itrig)
EXTERN int	filter_impulse_response (filter_t *f, doublewf_t *w, int itrig)
EXTERN filterrep_t *	create_splane_representation (filter_t *f)
EXTERN filterrep_t *	create_resonator_representation (filter_t *f)
EXTERN filterrep_t *	zplane_transform (filter_t *f, filterrep_t *s)
EXTERN void	print_filter_representation (FILE *of, filterrep_t *r)
EXTERN int	normalise_filter (filter_t *f, filterrep_t *s)
EXTERN int	calculate_filter_coefficients (filter_t *f)
EXTERN int	gaussian_filter_coeffs (filter_t *f)
EXTERN int	_expand_complex_polynomial (complex_t *w, int n, complex_t *a)
EXTERN complex_t	_eval_complex_polynomial (complex_t *a, int n, complex_t z)
EXTERN int	ddc_initialise (int ns, double fs)
EXTERN void	ddc_cleanup (void)
int	ddc (doublewf_t *w, double f, filter_t *filter, complexwf_t *dcw, doublewf_t *bufre, doublewf_t *bufim)
EXTERN int	fft_gen_tables (void)
EXTERN int	fft_initialise (int ns)
EXTERN void	fft_cleanup (void)
EXTERN int	complexfft (complexwf_t *z, int fft_mode)
EXTERN int	realfft (doublewf_t *y, int fft_mode, complexwf_t *z)
EXTERN void	norm_phase (double *phase)