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#ifndef FILTER_SPLITTER_H
#define FILTER_SPLITTER_H
#include "alMain.h"
#include "almalloc.h"
/* Band splitter. Splits a signal into two phase-matching frequency bands. */
class BandSplitter {
float coeff{0.0f};
float lp_z1{0.0f};
float lp_z2{0.0f};
float ap_z1{0.0f};
public:
void init(float f0norm);
void clear() noexcept { lp_z1 = lp_z2 = ap_z1 = 0.0f; }
void process(float *RESTRICT hpout, float *RESTRICT lpout, const float *input, int count);
};
/* The all-pass portion of the band splitter. Applies the same phase shift
* without splitting the signal.
*/
class SplitterAllpass {
float coeff{0.0f};
float z1{0.0f};
public:
void init(float f0norm);
void clear() noexcept { z1 = 0.0f; }
void process(float *RESTRICT samples, int count);
};
struct FrontStablizer {
SplitterAllpass APFilter[MAX_OUTPUT_CHANNELS];
BandSplitter LFilter, RFilter;
alignas(16) float LSplit[2][BUFFERSIZE];
alignas(16) float RSplit[2][BUFFERSIZE];
DEF_NEWDEL(FrontStablizer)
};
#endif /* FILTER_SPLITTER_H */
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