不韋 呂 / Mbed 2 deprecated UIT2_ReverbCombClass

Reverb system using single comb filter class for ST Nucleo F401RE.

Dependencies:   UIT_ADDA mbed

comb_filter.hpp@0:47e72130375e, 2014-10-31 (annotated)

Committer:
MikamiUitOpen
Date:
Fri Oct 31 07:37:36 2014 +0000
Revision:
0:47e72130375e
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:47e72130375e 1 //--------------------------------------------------------------
MikamiUitOpen 0:47e72130375e 2 // Comb filter
MikamiUitOpen 0:47e72130375e 3 // 2014/10/23, Copyright (c) 2014 MIKAMI, Naoki
MikamiUitOpen 0:47e72130375e 4 //--------------------------------------------------------------
MikamiUitOpen 0:47e72130375e 5
MikamiUitOpen 0:47e72130375e 6 #ifndef COMB_FILTER_HPP
MikamiUitOpen 0:47e72130375e 7 #define COMB_FILTER_HPP
MikamiUitOpen 0:47e72130375e 8
MikamiUitOpen 0:47e72130375e 9 #include "mbed.h"
MikamiUitOpen 0:47e72130375e 10
MikamiUitOpen 0:47e72130375e 11 template<int delay> class CombFilter
MikamiUitOpen 0:47e72130375e 12 {
MikamiUitOpen 0:47e72130375e 13 private:
MikamiUitOpen 0:47e72130375e 14 const float GC_;
MikamiUitOpen 0:47e72130375e 15 int ptr_;
MikamiUitOpen 0:47e72130375e 16 float un_[delay]; // for delay
MikamiUitOpen 0:47e72130375e 17 float Get() { return un_[ptr_]; }
MikamiUitOpen 0:47e72130375e 18 void Set(float x)
MikamiUitOpen 0:47e72130375e 19 {
MikamiUitOpen 0:47e72130375e 20 un_[ptr_] = x;
MikamiUitOpen 0:47e72130375e 21 if (++ptr_ >= delay) ptr_ = 0;
MikamiUitOpen 0:47e72130375e 22 }
MikamiUitOpen 0:47e72130375e 23 public:
MikamiUitOpen 0:47e72130375e 24 // Constructor
MikamiUitOpen 0:47e72130375e 25 CombFilter(float g) : GC_(g), ptr_(0) {}
MikamiUitOpen 0:47e72130375e 26
MikamiUitOpen 0:47e72130375e 27 // Execute comb filter
MikamiUitOpen 0:47e72130375e 28 float Execute(float x)
MikamiUitOpen 0:47e72130375e 29 {
MikamiUitOpen 0:47e72130375e 30 float yn = Get();
MikamiUitOpen 0:47e72130375e 31 Set(x + GC_*yn);
MikamiUitOpen 0:47e72130375e 32 return yn;
MikamiUitOpen 0:47e72130375e 33 }
MikamiUitOpen 0:47e72130375e 34
MikamiUitOpen 0:47e72130375e 35 // Clear internal delay elements
MikamiUitOpen 0:47e72130375e 36 void Clear()
MikamiUitOpen 0:47e72130375e 37 { for (int n=0; n<delay; n++) un_[n] = 0; }
MikamiUitOpen 0:47e72130375e 38 };
MikamiUitOpen 0:47e72130375e 39 #endif // COMB_FILTER_HPP
MikamiUitOpen 0:47e72130375e 40