//
// Created by bruno on 13. 7. 2026.
//

#ifndef AUDIOCODER_GOERTZEL_H
#define AUDIOCODER_GOERTZEL_H

typedef struct {
    float coeff;

    float s1;
    float s2;
} Goertzel;


void goertzel_init(
    Goertzel *g,
    float freq,
    float sampleRate,
    int samples);


void goertzel_add(
    Goertzel *g,
    float sample);


float goertzel_energy(
    Goertzel *g);

int goertzel_bin_freq(
        int freq,
        int sampleRate,
        int samples);

#endif //AUDIOCODER_GOERTZEL_H