CQpub0 Mikami
The experiment using this program is introduced on "Interface" No.12, CQ publishing Co.,Ltd, 2014. 本プログラムを使った実験は，CQ出版社のインターフェース 2014年12月号で紹介しています．
Dependencies: DSProcessingIO mbed
Diff: FirBaseClass.hpp
- Revision:
- 0:4498a5360dde
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FirBaseClass.hpp Tue Jul 15 08:21:30 2014 +0000
@@ -0,0 +1,41 @@
+//--------------------------------------------------------------
+// Virtual base class for FIR filter
+// Copyright (c) 2014 MIKAMI, Naoki, 2014/06/22
+//--------------------------------------------------------------
+
+#ifndef FIR_BASE_HPP
+#define FIR_BASE_HPP
+
+#include "mbed.h"
+
+namespace Mikami
+{
+ template<int order> class FirBase
+ {
+ private:
+ FirBase(const FirBase&);
+ FirBase& operator=(const FirBase&);
+ protected:
+ const float *const hm_; // pointer for filter coefficients
+ float xn_[order+1]; // buffer for inputs
+
+ // Constructor
+ FirBase(const float hk[]) : hm_(hk) { Clear(); }
+
+ // Execute filter
+ virtual float Execute(float xin) = 0;
+
+ // Move signals in xn_[]
+ void Move()
+ {
+ for (int k=order; k>0; k--)
+ xn_[k] = xn_[k-1]; // move input signals
+ }
+ public:
+ void Clear()
+ {
+ for (int k=0; k<=order; k++) xn_[k] = 0.0;
+ }
+ };
+}
+#endif // FIR_BASE_HPP