🛠️🐜 Antkeeper superbuild with dependencies included
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63 lines
1.6 KiB
63 lines
1.6 KiB
#ifndef FILTER_SPLITTER_H
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#define FILTER_SPLITTER_H
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#include "alMain.h"
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#include "almalloc.h"
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/* Band splitter. Splits a signal into two phase-matching frequency bands. */
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template<typename Real>
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class BandSplitterR {
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Real coeff{0.0f};
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Real lp_z1{0.0f};
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Real lp_z2{0.0f};
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Real ap_z1{0.0f};
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public:
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BandSplitterR() = default;
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BandSplitterR(const BandSplitterR&) = default;
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BandSplitterR(Real f0norm) { init(f0norm); }
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void init(Real f0norm);
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void clear() noexcept { lp_z1 = lp_z2 = ap_z1 = 0.0f; }
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void process(Real *hpout, Real *lpout, const Real *input, const int count);
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void applyHfScale(Real *samples, const Real hfscale, const int count);
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};
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using BandSplitter = BandSplitterR<float>;
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/* The all-pass portion of the band splitter. Applies the same phase shift
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* without splitting the signal.
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*/
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template<typename Real>
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class SplitterAllpassR {
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Real coeff{0.0f};
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Real z1{0.0f};
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public:
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SplitterAllpassR() = default;
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SplitterAllpassR(const SplitterAllpassR&) = default;
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SplitterAllpassR(Real f0norm) { init(f0norm); }
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void init(Real f0norm);
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void clear() noexcept { z1 = 0.0f; }
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void process(Real *samples, int count);
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};
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using SplitterAllpass = SplitterAllpassR<float>;
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struct FrontStablizer {
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static constexpr size_t DelayLength{256u};
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alignas(16) float DelayBuf[MAX_OUTPUT_CHANNELS][DelayLength];
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SplitterAllpass APFilter;
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BandSplitter LFilter, RFilter;
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alignas(16) float LSplit[2][BUFFERSIZE];
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alignas(16) float RSplit[2][BUFFERSIZE];
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alignas(16) float TempBuf[BUFFERSIZE + DelayLength];
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DEF_NEWDEL(FrontStablizer)
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};
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#endif /* FILTER_SPLITTER_H */
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