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kuba
2025-03-27 18:22:40 +01:00
parent 9cb81ff1bd
commit 531e5a6a38
3 changed files with 31 additions and 27 deletions
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lib/filters.h
+7 -1
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@@ -24,5 +24,11 @@ typedef struct
float x1, x2;
float y1, y2;
} Biquad;
void init_lpf(Biquad* filter, float sample_rate, float cutoff_freq);
typedef struct {
Biquad section1;
Biquad section2;
} LPF4;
void init_lpf(Biquad* filter, float sample_rate, float cutoff_freq, float Q);
void init_lpf4(LPF4* filter, float sample_rate, float cutoff_freq);
float apply_lpf4(LPF4* filter, float input);
float biquad(Biquad *filter, float input);