mirror of
https://github.com/AndroidAudioMods/ViPERFX_RE.git
synced 2025-06-08 02:29:40 +08:00
42 lines
2.2 KiB
C++
42 lines
2.2 KiB
C++
#include "Subwoofer.h"
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#include "../constants.h"
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#include <cmath>
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Subwoofer::Subwoofer() {
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uint32_t samplingRate = VIPER_DEFAULT_SAMPLING_RATE;
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this->peak[0].RefreshFilter(MultiBiquad::FilterType::PEAK, 0.0, 37.0, samplingRate, 1.0, false);
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this->peak[1].RefreshFilter(MultiBiquad::FilterType::PEAK, 0.0, 37.0, samplingRate, 1.0, false);
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this->peakLow[0].RefreshFilter(MultiBiquad::FilterType::PEAK, 0.0, 75.0, samplingRate, 1.0, false);
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this->peakLow[1].RefreshFilter(MultiBiquad::FilterType::PEAK, 0.0, 75.0, samplingRate, 1.0, false);
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this->lowpass[0].RefreshFilter(MultiBiquad::FilterType::LOW_PASS, 0.0, 200.0, samplingRate, 1.0, false);
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this->lowpass[1].RefreshFilter(MultiBiquad::FilterType::LOW_PASS, 0.0, 200.0, samplingRate, 1.0, false);
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}
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void Subwoofer::Process(float *samples, uint32_t size) {
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for (uint32_t i = 0; i < size * 2; i += 2) {
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double tmp;
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tmp = this->peak[0].ProcessSample(samples[i]);
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tmp = this->peakLow[0].ProcessSample(tmp);
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tmp = this->lowpass[0].ProcessSample(tmp - samples[i]);
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samples[i] = (samples[i] * 0.5f) + ((float) tmp * 0.6f);
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tmp = this->peak[1].ProcessSample(samples[i + 1]);
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tmp = this->peakLow[1].ProcessSample(tmp);
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tmp = this->lowpass[1].ProcessSample(tmp - samples[i + 1]);
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samples[i + 1] = (samples[i + 1] * 0.5f) + ((float) tmp * 0.6f);
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}
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}
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void Subwoofer::SetBassGain(uint32_t samplingRate, float gainDb) {
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float gain = 20.0f * log10( gainDb);
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float gainLower = 20.0f * log10( gainDb / 8.0f);
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this->peak[0].RefreshFilter(MultiBiquad::FilterType::PEAK, gain, 44.0, samplingRate, 0.75, true);
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this->peak[1].RefreshFilter(MultiBiquad::FilterType::PEAK, gain, 44.0, samplingRate, 0.75, true);
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this->peakLow[0].RefreshFilter(MultiBiquad::FilterType::PEAK, gainLower, 80.0, samplingRate, 0.2, true);
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this->peakLow[1].RefreshFilter(MultiBiquad::FilterType::PEAK, gainLower, 80.0, samplingRate, 0.2, true);
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this->lowpass[0].RefreshFilter(MultiBiquad::FilterType::LOW_PASS, 0.0, 380.0, samplingRate, 0.6, false);
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this->lowpass[1].RefreshFilter(MultiBiquad::FilterType::LOW_PASS, 0.0, 380.0, samplingRate, 0.6, false);
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}
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