Important changes to repositories hosted on mbed.com
Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.
To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.
It is also possible to export all your personal repositories from the account settings page.
Dependencies: BSP_DISCO_F746NG F746_GUI F746_SAI_IO FrequencyResponseDrawer LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed
Fork of
F746_SD_GraphicEqualizer
by 
不韋 呂
Diff: MyClasses_Functions/GrEqualizerFrqResp.hpp
- Revision:
- 7:be29ba9c83b2
- Parent:
- 6:599229a1b06a
- Child:
- 8:12aa05f3cc24
--- a/MyClasses_Functions/GrEqualizerFrqResp.hpp Sat May 07 08:15:00 2016 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,52 +0,0 @@
-//-----------------------------------------------------------
-// グラフィックイコライザで使う IIR フィルタの周波数応答
-// Frequency response for graphic equalizer
-//
-// 2016/04/27, Copyright (c) 2016 MIKAMI, Naoki
-//-----------------------------------------------------------
-
-#ifndef GRAPHIC_EQUALIZER_FREQUENCY_RESPONSE_HPP
-#define GRAPHIC_EQUALIZER_FREQUENCY_RESPONSE_HPP
-
-#include "FrequancyResponseBase.hpp"
-#include "BiquadGrEq.hpp"
-
-namespace Mikami
-{
- class GrEqualizerFrqResp : public FrequencyResponse
- {
- public:
- GrEqualizerFrqResp(int stages) : STAGES_(stages)
- { ck_ = new BiquadGrEq::Coefs[stages]; }
-
- ~GrEqualizerFrqResp()
- { delete[] ck_; }
-
- // フィルタの係数設定
- void SetParams(BiquadGrEq::Coefs ck[])
- { for (int n=0; n<STAGES_; n++) ck_[n] = ck[n]; }
-
- void SetParam(BiquadGrEq::Coefs ck, int n)
- { ck_[n] = ck; }
-
- // 周波数応答の絶対値を返す関数, 引数: z^(-1)
- virtual float AbsH_z(Complex u)
- {
- Complex h = 1;
- for (int k=0; k<STAGES_; k++)
- h = h*(ck_[k].b0 + (ck_[k].b1 + ck_[k].b2*u)*u)
- /((1.0f - (ck_[k].a1 + ck_[k].a2*u)*u));
- return abs(h);
- }
-
- private:
- const int STAGES_;
- float g0_;
- BiquadGrEq::Coefs *ck_;
-
- // disallow copy constructor and assignment operator
- GrEqualizerFrqResp(const GrEqualizerFrqResp&);
- GrEqualizerFrqResp& operator=(const GrEqualizerFrqResp&);
- };
-}
-#endif // GRAPHIC_EQUALIZER_FREQUENCY_RESPONSE_HPP