shithub: pt2-clone

ref: 871c59c2513acc611f3b1f4242453fc3bd1f6460
dir: /src/pt2_ledfilter.h/

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#pragma once

#include <stdint.h>
#include <stdbool.h>

typedef struct ledFilter_t
{
	double LIn1, LIn2, LOut1, LOut2;
	double RIn1, RIn2, ROut1, ROut2;
	double a1, a2, a3, b1, b2;
} ledFilter_t;

void clearLEDFilterState(ledFilter_t *f);
void calcLEDFilterCoeffs(double sr, double hz, double qfactor, ledFilter_t *filter);
void LEDFilter(ledFilter_t *f, const double *in, double *out);