不韋 呂 / Mbed 2 deprecated F746_AudioPlayerSD

Output the audio signal (*.bin) with filtering by IIR filter in the SD card using onboard CODEC. For *.wav file, F746_SD_WavPlayer and F746_SD_GraphicEqualiser are published on mbed. SD カードのオーディオ信号 (*.bin) 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．*.wav 形式のファイル用には，F746_SD_WavPlayer と F746_SD_GraphicEqualiser を mbed で公開している．

Dependencies:   BSP_DISCO_F746NG_patch_fixed F746_GUI LCD_DISCO_F746NG SDFileSystem_Warning_Fixed TS_DISCO_F746NG mbed

MyClasses_Functions/DesignerDrawer.cpp@5:4a99dabc9180, 2016-04-17 (annotated)

Committer:
MikamiUitOpen
Date:
Sun Apr 17 08:44:43 2016 +0000
Revision:
5:4a99dabc9180
Parent:
4:76aa20fb326a 
6

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 4:76aa20fb326a 1 //------------------------------------------------------------------------------
MikamiUitOpen 4:76aa20fb326a 2 // 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
MikamiUitOpen 4:76aa20fb326a 3 //
MikamiUitOpen 5:4a99dabc9180 4 // 2016/04/17, Copyright (c) 2016 MIKAMI, Naoki
MikamiUitOpen 4:76aa20fb326a 5 //------------------------------------------------------------------------------
MikamiUitOpen 4:76aa20fb326a 6
MikamiUitOpen 4:76aa20fb326a 7 #include "DesignerDrawer.hpp"
MikamiUitOpen 4:76aa20fb326a 8
MikamiUitOpen 4:76aa20fb326a 9 namespace Mikami
MikamiUitOpen 4:76aa20fb326a 10 {
MikamiUitOpen 4:76aa20fb326a 11 // Constructor
MikamiUitOpen 4:76aa20fb326a 12 DesignerDrawer::DesignerDrawer(uint16_t x0, uint16_t y0,
MikamiUitOpen 4:76aa20fb326a 13 uint16_t db10, int fs, int order,
MikamiUitOpen 4:76aa20fb326a 14 float fc, uint16_t fL, uint16_t fH,
MikamiUitOpen 4:76aa20fb326a 15 BilinearDesign::Type lpHp)
MikamiUitOpen 4:76aa20fb326a 16 : lcd_(GuiBase::GetLcdPtr()), ts_(GuiBase::GetTsPtr()),
MikamiUitOpen 4:76aa20fb326a 17 X0_(x0), Y0_(y0), DB10_(db10), ORDER_(order),
MikamiUitOpen 4:76aa20fb326a 18 CURSOR_Y0_(y0+1-db10*6), CURSOR_LENGTH_(db10*6-1),
MikamiUitOpen 4:76aa20fb326a 19 LOWER_F_(fL), HIGHER_F_(fH),
MikamiUitOpen 4:76aa20fb326a 20 CURSOR_COLOR_(0xFFE000D0), CURSOR_TOUCHED_COLOR_(0xFFFF80FF)
MikamiUitOpen 4:76aa20fb326a 21 {
MikamiUitOpen 4:76aa20fb326a 22 drawerObj_ = new FrqRespDrawer(x0, 100.0f, 8000.0f, 150,
MikamiUitOpen 4:76aa20fb326a 23 y0, -60, 0, db10, fs);
MikamiUitOpen 4:76aa20fb326a 24
MikamiUitOpen 4:76aa20fb326a 25 // 双一次 z 変換による IIR フィルタの設計
MikamiUitOpen 4:76aa20fb326a 26 designObj_ = new BilinearDesign(order, fs);
MikamiUitOpen 4:76aa20fb326a 27 coefs_ = new BilinearDesign::Coefs[order/2];
MikamiUitOpen 4:76aa20fb326a 28 ck_ = (Biquad::Coefs *)coefs_;
MikamiUitOpen 4:76aa20fb326a 29
MikamiUitOpen 4:76aa20fb326a 30 fC_ = fc; // 最初に与える遮断周波数
MikamiUitOpen 4:76aa20fb326a 31 designObj_->Execute(fC_, lpHp, coefs_, g0_);
MikamiUitOpen 5:4a99dabc9180 32 frqResp_.SetParams(ORDER_, g0_, ck_);
MikamiUitOpen 4:76aa20fb326a 33
MikamiUitOpen 4:76aa20fb326a 34 // 周波数特性の描画
MikamiUitOpen 4:76aa20fb326a 35 lblFrq_ = new NumericLabel<int>(110, 30);
MikamiUitOpen 4:76aa20fb326a 36 DrawResponse();
MikamiUitOpen 4:76aa20fb326a 37 tp_ = new TouchPanelDetectorX(
MikamiUitOpen 4:76aa20fb326a 38 drawerObj_->X(LOWER_F_), drawerObj_->X(HIGHER_F_),
MikamiUitOpen 4:76aa20fb326a 39 CURSOR_Y0_, y0);
MikamiUitOpen 4:76aa20fb326a 40 lp_ = lpHp;
MikamiUitOpen 4:76aa20fb326a 41 cursorRedraw_ = false;
MikamiUitOpen 4:76aa20fb326a 42 }
MikamiUitOpen 4:76aa20fb326a 43
MikamiUitOpen 4:76aa20fb326a 44 DesignerDrawer::~DesignerDrawer()
MikamiUitOpen 4:76aa20fb326a 45 {
MikamiUitOpen 4:76aa20fb326a 46 delete tp_;
MikamiUitOpen 4:76aa20fb326a 47 delete lblFrq_;
MikamiUitOpen 4:76aa20fb326a 48 delete coefs_;
MikamiUitOpen 4:76aa20fb326a 49 delete designObj_;
MikamiUitOpen 4:76aa20fb326a 50 delete drawerObj_;
MikamiUitOpen 4:76aa20fb326a 51 }
MikamiUitOpen 4:76aa20fb326a 52
MikamiUitOpen 4:76aa20fb326a 53 // フィルタの再設計と周波数特性の再描画
MikamiUitOpen 4:76aa20fb326a 54 bool DesignerDrawer::ReDesignAndDraw(Biquad::Coefs *ck, float &g0,
MikamiUitOpen 4:76aa20fb326a 55 BilinearDesign::Type lpHp)
MikamiUitOpen 4:76aa20fb326a 56 {
MikamiUitOpen 4:76aa20fb326a 57 bool changed = (lpHp != lp_) ? true : false;
MikamiUitOpen 4:76aa20fb326a 58 bool tch = tp_->IsTouched(cursorX_, cursorX_);
MikamiUitOpen 4:76aa20fb326a 59 if (tch || changed)
MikamiUitOpen 4:76aa20fb326a 60 {
MikamiUitOpen 4:76aa20fb326a 61 int newFc = Frq10(drawerObj_->PosToFrq(cursorX_));
MikamiUitOpen 4:76aa20fb326a 62 newFc = (newFc > HIGHER_F_) ? HIGHER_F_ : newFc;
MikamiUitOpen 4:76aa20fb326a 63 if ((abs(newFc - fC_) >= 10) || changed)
MikamiUitOpen 4:76aa20fb326a 64 {
MikamiUitOpen 4:76aa20fb326a 65 fC_ = newFc;
MikamiUitOpen 4:76aa20fb326a 66 lblFrq_->Draw("Cutoff frequency = %4d Hz", newFc);
MikamiUitOpen 4:76aa20fb326a 67 designObj_->Execute(newFc, lpHp, coefs_, g0_);
MikamiUitOpen 4:76aa20fb326a 68 GetCoefficients(ck, g0);
MikamiUitOpen 4:76aa20fb326a 69
MikamiUitOpen 5:4a99dabc9180 70 frqResp_.SetParams(ORDER_, g0_, ck_);
MikamiUitOpen 4:76aa20fb326a 71 drawerObj_->Erase();
MikamiUitOpen 5:4a99dabc9180 72 drawerObj_->DrawAxis(); // 目盛線の描画
MikamiUitOpen 5:4a99dabc9180 73 drawerObj_->DrawGraph(frqResp_); // 周波数特性のグラフのカーブを描画する
MikamiUitOpen 4:76aa20fb326a 74
MikamiUitOpen 4:76aa20fb326a 75 if (tch) // カーソルの移動
MikamiUitOpen 4:76aa20fb326a 76 {
MikamiUitOpen 4:76aa20fb326a 77 lcd_->SetTextColor(CURSOR_TOUCHED_COLOR_);
MikamiUitOpen 4:76aa20fb326a 78 lcd_->DrawVLine(cursorX_, CURSOR_Y0_, CURSOR_LENGTH_);
MikamiUitOpen 4:76aa20fb326a 79 }
MikamiUitOpen 4:76aa20fb326a 80 cursorRedraw_ = true;
MikamiUitOpen 4:76aa20fb326a 81 oldCursorX_ = cursorX_;
MikamiUitOpen 4:76aa20fb326a 82 lp_ = lpHp;
MikamiUitOpen 4:76aa20fb326a 83 return true;
MikamiUitOpen 4:76aa20fb326a 84 }
MikamiUitOpen 4:76aa20fb326a 85 }
MikamiUitOpen 4:76aa20fb326a 86
MikamiUitOpen 4:76aa20fb326a 87 if (!tch && cursorRedraw_) // カーソルを元の色に戻す
MikamiUitOpen 4:76aa20fb326a 88 {
MikamiUitOpen 4:76aa20fb326a 89 lcd_->SetTextColor(CURSOR_COLOR_);
MikamiUitOpen 4:76aa20fb326a 90 lcd_->DrawVLine(oldCursorX_, CURSOR_Y0_, CURSOR_LENGTH_);
MikamiUitOpen 4:76aa20fb326a 91 cursorRedraw_ = false;
MikamiUitOpen 4:76aa20fb326a 92 }
MikamiUitOpen 4:76aa20fb326a 93 return false;
MikamiUitOpen 4:76aa20fb326a 94 }
MikamiUitOpen 4:76aa20fb326a 95
MikamiUitOpen 4:76aa20fb326a 96 // 周波数特性の描画
MikamiUitOpen 4:76aa20fb326a 97 void DesignerDrawer::DrawResponse()
MikamiUitOpen 4:76aa20fb326a 98 {
MikamiUitOpen 4:76aa20fb326a 99 lblFrq_->Draw("Cutoff frequency = %4d Hz", fC_);
MikamiUitOpen 5:4a99dabc9180 100 DrawAxisNum(); // 目盛値の描画
MikamiUitOpen 5:4a99dabc9180 101 drawerObj_->DrawAxis(); // 目盛線の描画
MikamiUitOpen 5:4a99dabc9180 102 drawerObj_->DrawGraph(frqResp_); // 周波数特性のカーブの描画
MikamiUitOpen 4:76aa20fb326a 103
MikamiUitOpen 4:76aa20fb326a 104 cursorX_ = drawerObj_->X(fC_);
MikamiUitOpen 4:76aa20fb326a 105 lcd_->SetTextColor(CURSOR_COLOR_);
MikamiUitOpen 4:76aa20fb326a 106 lcd_->DrawVLine(cursorX_, CURSOR_Y0_, CURSOR_LENGTH_);
MikamiUitOpen 4:76aa20fb326a 107 }
MikamiUitOpen 4:76aa20fb326a 108
MikamiUitOpen 4:76aa20fb326a 109 // フィルタ係数の取得
MikamiUitOpen 4:76aa20fb326a 110 void DesignerDrawer::GetCoefficients(Biquad::Coefs *c, float &g0)
MikamiUitOpen 4:76aa20fb326a 111 {
MikamiUitOpen 4:76aa20fb326a 112 for (int k=0; k<ORDER_/2; k++) c[k] = ck_[k];
MikamiUitOpen 4:76aa20fb326a 113 g0 = g0_;
MikamiUitOpen 4:76aa20fb326a 114 }
MikamiUitOpen 4:76aa20fb326a 115
MikamiUitOpen 4:76aa20fb326a 116 // 周波数を 10, 20, 50, 100 Hz の倍数にする
MikamiUitOpen 4:76aa20fb326a 117 int DesignerDrawer::Frq10(float f)
MikamiUitOpen 4:76aa20fb326a 118 {
MikamiUitOpen 4:76aa20fb326a 119 if (f < 1000)
MikamiUitOpen 4:76aa20fb326a 120 return ((int)(f/10.0f + 0.5f))*10;
MikamiUitOpen 4:76aa20fb326a 121 if (f < 2000)
MikamiUitOpen 4:76aa20fb326a 122 return ((int)(f/20.0f + 0.5f))*20;
MikamiUitOpen 4:76aa20fb326a 123 if (f < 3000)
MikamiUitOpen 4:76aa20fb326a 124 return ((int)(f/50.0f + 0.5f))*50;
MikamiUitOpen 4:76aa20fb326a 125 else
MikamiUitOpen 4:76aa20fb326a 126 return ((int)(f/100.0f + 0.5f))*100;
MikamiUitOpen 4:76aa20fb326a 127 }
MikamiUitOpen 4:76aa20fb326a 128
MikamiUitOpen 5:4a99dabc9180 129 // 周波数特性の目盛値の描画
MikamiUitOpen 4:76aa20fb326a 130 void DesignerDrawer::DrawAxisNum()
MikamiUitOpen 4:76aa20fb326a 131 {
MikamiUitOpen 4:76aa20fb326a 132 const int16_t OFS = 6;
MikamiUitOpen 4:76aa20fb326a 133 drawerObj_->DrawCharX(100, OFS, "0.1");
MikamiUitOpen 4:76aa20fb326a 134 drawerObj_->DrawCharX(300, OFS, "0.3");
MikamiUitOpen 4:76aa20fb326a 135 drawerObj_->DrawCharX(1000, OFS, "1.0");
MikamiUitOpen 4:76aa20fb326a 136 drawerObj_->DrawCharX(3000, OFS, "3.0");
MikamiUitOpen 4:76aa20fb326a 137 drawerObj_->DrawCharX(8000, OFS, "8.0");
MikamiUitOpen 4:76aa20fb326a 138
MikamiUitOpen 4:76aa20fb326a 139 Label l_frq(drawerObj_->X(900), Y0_+20, "Frequency [kHz]",
MikamiUitOpen 4:76aa20fb326a 140 Label::CENTER);
MikamiUitOpen 4:76aa20fb326a 141 drawerObj_->DrawNumericY(-24, -6, 4, 20, "%3d"); // 縦軸の目盛は 20 dB 間隔
MikamiUitOpen 4:76aa20fb326a 142 Label l_dB(X0_-24, Y0_-DB10_*6-20, "[dB]");
MikamiUitOpen 4:76aa20fb326a 143 }
MikamiUitOpen 4:76aa20fb326a 144 }
MikamiUitOpen 5:4a99dabc9180 145