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advanced_eq_harmonics.h
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123 lines (104 loc) · 4.69 KB
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// ./advanced_eq_harmonics.h
// Header for Harmonic Enhancer and Linear Phase EQ (Final Corrected Version)
#pragma once
#include "SimpleBiquad.h"
#include "AudioEffect.h"
#include <vector>
#include <cmath>
#include <complex>
#include <string>
#include <nlohmann/json.hpp>
#include <fftw3.h>
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↓修正開始◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
// パラメトリックEQ (IIRフィルタベース)
class ParametricEQ : public AudioEffect {
public:
void setup(double sr, const json& params) override;
void process(std::vector<float>& block, int channels) override;
void reset() override;
const std::string& getName() const override { return name_; }
private:
std::string name_ = "parametric_eq";
bool enabled_ = true;
double sample_rate_ = 48000.0;
// 2チャンネル分のフィルターを保持
std::vector<SimpleBiquad> filters_l_;
std::vector<SimpleBiquad> filters_r_;
};
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↑修正終わり◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
// 線形位相EQ（FFTベース）
class LinearPhaseEQ : public AudioEffect {
public:
LinearPhaseEQ();
~LinearPhaseEQ() override;
void setup(double sr, const json& params) override;
void process(std::vector<float>& block, int channels) override;
void reset() override;
const std::string& getName() const override { return name_; }
private:
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↓修正開始◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
std::string name_ = "linear_phase_eq";
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↑修正終わり◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
double sample_rate_ = 44100.0;
size_t fft_size_ = 2048;
size_t hop_size_ = 512;
bool enabled_ = true;
int channels_ = 0;
// 左右チャンネル用のFFTプランとバッファ
fftwf_plan fft_plan_fwd_L_, fft_plan_fwd_R_;
fftwf_plan fft_plan_bwd_L_, fft_plan_bwd_R_;
std::vector<float> window_;
// 処理に使用するバッファ
std::vector<float> time_domain_buffer_L_, time_domain_buffer_R_;
std::vector<std::complex<float>> freq_domain_buffer_L_, freq_domain_buffer_R_;
// EQカーブ
std::vector<std::complex<float>> eq_curve_;
// Overlap-Add法のための入出力バッファ
std::vector<float> input_buffer_L_, input_buffer_R_;
std::vector<float> output_buffer_L_, output_buffer_R_;
size_t input_buffer_write_pos_ = 0;
void setupEQCurve(const json& bands);
void applyEQBand(double freq, double gain_db, double q, const std::string& type);
};
// ハーモニックエンハンサー
class HarmonicEnhancer : public AudioEffect {
public:
void setup(double sr, const json& params) override;
void process(std::vector<float>& block, int channels) override;
void reset() override;
const std::string& getName() const override { return name_; }
private:
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↓修正開始◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
std::string name_ = "harmonic_enhancer";
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↑修正終わり◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
double sample_rate_ = 44100.0;
bool enabled_ = true;
double drive_ = 0.3;
double even_harmonics_ = 0.2;
double odd_harmonics_ = 0.3;
double mix_ = 0.25;
SimpleBiquad dc_blocker_, lowpass_;
float generateHarmonics(float input);
float processSample(float sample);
};
// スペクトラルゲート（ノイズ除去）
class SpectralGate : public AudioEffect {
public:
void setup(double sr, const json& params) override;
void process(std::vector<float>& block, int channels) override;
void reset() override;
const std::string& getName() const override { return name_; }
private:
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↓修正開始◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
std::string name_ = "spectral_gate";
// ◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️↑修正終わり◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️◾️
double sample_rate_ = 44100.0;
bool enabled_ = false;
double threshold_db_ = -60.0;
double attack_ms_ = 5.0;
double release_ms_ = 100.0;
float current_gain_ = 0.0f;
double attack_coeff_ = 0.0;
double release_coeff_ = 0.0;
float processSample(float sample);
};