不韋 呂
FrqRespDrawer class to draw frequency response for digital filter. ディジタルフィルタの周波数特性を，周波数軸をログスケールで描画するための FrqRespDrawer クラス． このライブラリを登録した際のプログラム：「F746_FrequencyResponseDrawer_Demo」
Dependents: F746_SD_WavPlayer F746_SD_GraphicEqualizer_ren0620 F746_FrequencyResponseDrawer_Demo F746_SD_VarableFilter ... more
Diff: FrequancyResponseBase.hpp
- Revision:
- 0:0bc63b49e2a3
- Child:
- 1:19a32f6279e6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/FrequancyResponseBase.hpp Sun May 01 14:00:06 2016 +0000
@@ -0,0 +1,30 @@
+//-----------------------------------------------------------
+// FrequencyResponse class (abstract base class)
+// Derived class of this class mest be used to give
+// argument of FrqRespDrawer::DrawGraph()
+//
+// AbsH_z() must be overrided
+//
+// 2016/05/01, Copyright (c) 2016 MIKAMI, Naoki
+//-----------------------------------------------------------
+
+#ifndef FREQUENCY_RESPONSE_BASE_HPP
+#define FREQUENCY_RESPONSE_BASE_HPP
+
+#include <complex> // requisite for complex
+
+namespace Mikami
+{
+ typedef complex<float> Complex; // define "Complex"
+
+ class FrequencyResponse
+ {
+ public:
+ // 周波数応答の絶対値を返す関数, 引数: z^(-1)
+ virtual float AbsH_z(Complex u) = 0;
+
+ protected:
+ FrequencyResponse() {}
+ };
+}
+#endif // F746_FREQUENCY_RESPONSE_BASE_HPP