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revised version of F746_SD_GraphicEqualizer
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
Diff: MyClasses_Functions/DesignerDrawer.cpp
- Revision:
- 8:12aa05f3cc24
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MyClasses_Functions/DesignerDrawer.cpp Mon May 09 08:54:09 2016 +0000 @@ -0,0 +1,76 @@ +//------------------------------------------------------------------------------ +// イコライザ用フィルタのパラメータを設定し,その周波数特性を描画するためのクラス +// +// 2016/05/09, Copyright (c) 2016 MIKAMI, Naoki +//------------------------------------------------------------------------------ + +#include "DesignerDrawer.hpp" + +namespace Mikami +{ + // Constructor + DesignerDrawer::DesignerDrawer(uint16_t x0, uint16_t y0, + int bands, float f0, int fs, float db1) + : lcd_(GuiBase::GetLcdPtr()), ts_(GuiBase::GetTsPtr()), + X0_(x0), Y0_(y0), BANDS_(bands), Q_VAL_(1.0f/sqrtf(2.0f)) + { + drawerObj_ = new FrqRespDrawer(x0, 50.0f, 20000.0f, 142, + y0, -18, 18, db1, 6, fs); + + calculator_ = new GrEqParams(bands, fs); + f0_ = new float[bands]; + for (int n=0; n<bands; n++) + f0_[n] = f0*powf(2, n); + + ck_ = new BiquadGrEq::Coefs[bands]; + for (int n=0; n<bands; n++) + ck_[n] = calculator_->Execute(n, f0_[n], 0, Q_VAL_); + frqResp_ = new GrEqualizerFrqResp(bands); + frqResp_->SetParams(ck_); + + // 周波数特性の描画 + DrawResponse(); + } + + DesignerDrawer::~DesignerDrawer() + { + delete[] frqResp_; + delete[] ck_; + delete[] f0_; + delete calculator_; + delete drawerObj_; + } + + // 周波数特性の描画 + void DesignerDrawer::DrawResponse() + { + drawerObj_->DrawAxis(); // 目盛線の描画 + FrqRespDrawer::AxisX_Char numX[] = // 横軸の目盛値を描画する際に使う構造体の配列 + {{ 50, "50"}, { 100, "100"}, { 200, "200"}, { 500, "500"}, { 1000, "1k"}, + { 2000, "2k"}, { 5000, "5k"}, {10000, "10k"}, {20000, "20k"}}; + drawerObj_->DrawNumericX(numX, 9, 6, "Frequency [Hz]"); // 横軸の目盛 + drawerObj_->DrawNumericY(-24, -6, 6, "%3d"); // 縦軸の目盛値は 6 dB 間隔 + drawerObj_->DrawGraph(frqResp_); // 周波数特性のカーブの描画 + } + + // 周波数特性の平坦化と描画 + void DesignerDrawer::DrawFlat() + { + for (int n=0; n<BANDS_; n++) + ck_[n] = calculator_->Execute(n, f0_[n], 0, Q_VAL_); + frqResp_->SetParams(ck_); + drawerObj_->Erase(); + drawerObj_->DrawAxis(); // 目盛線の描画 + drawerObj_->DrawGraph(frqResp_); // 周波数特性のグラフのカーブを描画する + } + + // 特定のバンドのイコライザ用フィルタのパラメータの設定と周波数特性の再描画 + void DesignerDrawer::DesignAndRedraw(float gainDb, int n) + { + ck_[n] = calculator_->Execute(n, f0_[n], gainDb, Q_VAL_); + frqResp_->SetParam(ck_[n], n); + drawerObj_->Erase(); + drawerObj_->DrawAxis(); // 目盛線の描画 + drawerObj_->DrawGraph(frqResp_); // 周波数特性のグラフのカーブを描画する + } +}