#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <float.h>
#include "libdspau.h"

Include dependency graph for libdspau-correlations.c:

Functions
int	dspau_bandpasscorrelate (double in, double out, int *c, int skip, double Q)
	A band-pass auto-correlator (Warning: high memory usage!) More...

int	dspau_autocorrelate (double in, double out, int *c)
	An auto-correlator. More...

double	dspau_crosscorrelate (double in1, double in2, double out, int len1, int len2, int len)
	A cross-correlator. More...

Function Documentation

◆ dspau_autocorrelate()

An auto-correlator.

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream (input/output).
skip	skip n values at beginning (resulting len will be reduced).

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

int dspau_bandpasscorrelate	(	double *	in,
		double *	out,
		int *	len,
		int	skip,
		double	Q
	)

A band-pass auto-correlator (Warning: high memory usage!)

Parameters

in	the input stream. (input)
out	the output stream. (output)
len	the length of the input stream. (input/output)
skip	skip n values at beginning (resulting len will be reduced).
Q	the slope of the band-pass filters.

Returns: the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.

double dspau_crosscorrelate	(	double *	in1,
		double *	in2,
		double *	out,
		int	len1,
		int	len2,
		int *	len
	)

A cross-correlator.

Parameters

in1	the first input stream. (input)
in2	the second input stream. (input)
out	the output stream. (output)
len1	the length of the first input stream. (input)
len2	the length of the second input stream. (input)
len	the length of the output stream. (output)

Returns: the resulting correlation degree.; the output stream if successfull elaboration. NULL if an error is encountered. Return 0 if success. Return -1 if any error occurs.