不韋 呂
Demo program of digital signal processing: Variable LPF/HPF, Vocal canceller, Pitch shifter, Reverbrator. ディジタル信号処理のデモプログラム． 遮断周波数可変 LPF/HPF，ボーカルキャンセラ，ピッチシフタ，残響生成器．
Dependencies: Array_Matrix F446_AD_DA UIT_AQM1602 mbed
Diff: SignalProcessing/Reverbrator.hpp
- Revision:
- 0:fa74b1130cc3
- Child:
- 5:503bd366fd73
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SignalProcessing/Reverbrator.hpp Sun Jan 29 09:11:30 2017 +0000
@@ -0,0 +1,39 @@
+//--------------------------------------------------------------
+// 残響生成器
+//
+// 2017/01/28, Copyright (c) 2017 MIKAMI, Naoki
+//--------------------------------------------------------------
+
+#ifndef ECHO_SYSTEM_HPP
+#define ECHO_SYSTEM_HPP
+
+#include "ReverbUnit.hpp"
+
+class EchoSystem : public SignalProcessing
+{
+public:
+ EchoSystem(float gC = 0.8f, float gA = 0.6f)
+ : G0_(1.0f - gC),
+ cmF1_(gC, 1759), cmF2_(gC, 1543),
+ cmF3_(gC, 1319), cmF4_(gC, 1301),
+ apF1_(gA, 241), apF2_(gA, 173) {}
+
+ virtual float Execute(float xn1, float xn2)
+ {
+ float xn = G0_*(xn1 + xn2)*0.5f;
+ float yn = cmF1_.Execute(xn)
+ + cmF2_.Execute(xn)
+ + cmF3_.Execute(xn)
+ + cmF4_.Execute(xn);
+ yn = apF2_.Execute(apF1_.Execute(yn));
+ yn = yn + xn; // add direct input signal
+ return yn;
+ }
+
+private:
+ const float G0_;
+
+ CombFilter cmF1_, cmF2_, cmF3_, cmF4_;
+ AllPassFilter apF1_, apF2_;
+};
+#endif // ECHO_SYSTEM_HPP