不韋 呂
Audio singal input and output example for DISCO-F746. Input: MEMS mic, Output: CN10 OUT, Acoustic effect: echo and frequency shift. DISCO-F746 によるオーディオ信号入出力．入力：MEMS マイク，出力：CN10 OUT，音響効果：エコー，周波数変換．
Dependencies: F746_GUI F746_SAI_IO
Diff: MyAcousticEffector_MIC/ReverbUnitBase.hpp
- Revision:
- 10:56f2f01df983
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MyAcousticEffector_MIC/ReverbUnitBase.hpp Mon Apr 10 13:44:13 2017 +0000
@@ -0,0 +1,54 @@
+//--------------------------------------------------------------
+// Base class for Reverb unit
+// 2017/04/04, Copyright (c) 2017 MIKAMI, Naoki
+//--------------------------------------------------------------
+
+#ifndef REVERB_UNIT_BASE_HPP
+#define REVERB_UNIT_BASE_HPP
+
+#include "mbed.h"
+#include "Array.hpp"
+
+namespace Mikami
+{
+ // Base class for reverb unit
+ class ReverbBase
+ {
+ public:
+ // Constructor
+ ReverbBase(int delay)
+ : ptr_(0), delay_(delay), un_(delay)
+ { Clear(); }
+
+ // Clear internal delay elements
+ void Clear()
+ { for (int n=0; n<delay_; n++) un_[n] = 0; }
+
+ protected:
+ float Get() { return un_[ptr_]; }
+
+ float Get(int n)
+ {
+ int k = ptr_ + n;
+ if (k > delay_) k -= delay_;
+ if (k < 0) k += delay_;
+ return un_[k];
+ }
+
+ void Set(float x)
+ {
+ un_[ptr_] = x;
+ if (++ptr_ >= delay_) ptr_ = 0;
+ }
+
+ private:
+ int ptr_;
+ int delay_;
+ Array<float> un_; // for delay
+
+ // disallow copy constructor and assignment operator
+ ReverbBase(const ReverbBase&);
+ ReverbBase& operator=(const ReverbBase&);
+ };
+}
+#endif // REVERB_UNIT_BASE_HPP