不韋 呂
Output the audio signal with filtering by IIR filter in the *.wav file on the SD card using onboard CODEC. SD カードの *.wav ファイルのオーディオ信号を遮断周波数可変の IIR フィルタを通して，ボードに搭載されているCODEC で出力する．
Dependencies: BSP_DISCO_F746NG F746_GUI LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed FrequencyResponseDrawer F746_SAI_IO Array_Matrix
Diff: MyClasses_Functions/DesignerDrawer.hpp
- Revision:
- 0:04b43b777fae
- Child:
- 2:2478e7a8e8d5
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/MyClasses_Functions/DesignerDrawer.hpp Tue Apr 19 09:46:11 2016 +0000
@@ -0,0 +1,72 @@
+//------------------------------------------------------------------------------
+// IIR フィルタを双一次 z 変換で設計し，その周波数特性を描画するためのクラス -- Header
+//
+// 2016/04/19, Copyright (c) 2016 MIKAMI, Naoki
+//------------------------------------------------------------------------------
+
+#ifndef F746_DISIGNER_AND_DRAWER_HPP
+#define F746_DISIGNER_AND_DRAWER_HPP
+
+#include "NumericLabel.hpp"
+#include "TouchPanelDetectorX.hpp"
+#include "FrquencyResponseDrawer.hpp"
+#include "BilinearDesignLH.hpp"
+#include "IIR_CascadeFrqResp.hpp"
+
+namespace Mikami
+{
+ class DesignerDrawer
+ {
+ public:
+ // Constructor
+ DesignerDrawer(uint16_t x0, uint16_t y0,
+ uint16_t db10, int fs, int order,
+ float fc, uint16_t fL, uint16_t fH,
+ BilinearDesign::Type lpHp);
+
+ ~DesignerDrawer();
+
+ // フィルタの再設計と周波数特性の再描画
+ bool ReDesignAndDraw(Biquad::Coefs *ck, float &g0,
+ BilinearDesign::Type lpHp);
+
+ // 周波数特性の描画
+ void DrawResponse();
+
+ void GetCoefficients(Biquad::Coefs *ck, float &g0);
+
+ uint16_t GetOrder() { return ORDER_; }
+
+ private:
+ LCD_DISCO_F746NG *lcd_;
+ TS_DISCO_F746NG *ts_;
+
+ const uint16_t X0_, Y0_;
+ const uint16_t DB10_;
+ const uint16_t ORDER_;
+ const uint16_t CURSOR_Y0_, CURSOR_LENGTH_;
+ const uint16_t LOWER_F_, HIGHER_F_;
+ const uint32_t CURSOR_COLOR_, CURSOR_TOUCHED_COLOR_;
+
+ IIR_CascadeFrqResp frqResp_; // IIR フィルタの周波数応答に対応するオブジェクト
+ BilinearDesign::Coefs *coefs_; // 設計された係数
+ Biquad::Coefs *ck_;
+ float g0_; // 設計された係数(利得定数)
+
+ int fC_; // 遮断周波数
+
+ uint16_t cursorX_, oldCursorX_;
+ bool cursorRedraw_;
+ BilinearDesign::Type lp_;
+
+ FrqRespDrawer *drawerObj_;
+ BilinearDesign *designObj_;
+ TouchPanelDetectorX *tp_;
+ NumericLabel<int> *lblFrq_; // 遮断周波数表示用
+
+ // 周波数を 10, 20, 50, 100 Hz の倍数にする
+ int Frq10(float f);
+ };
+}
+#endif // F746_DISIGNER_AND_DRAWER_HPP
+