不韋 呂 / Mbed 2 deprecated F746_SpectralAnalysis_Example

Spectrum analyzer using DISCO-F746NG. Spectrum is calculated by FFT or linear prediction. The vowel data is in "vowel_data.hpp"

Dependencies:   BSP_DISCO_F746NG LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed BUTTON_GROUP

main.cpp@3:ce2e8481790c, 2015-11-03 (annotated)

Committer:
MikamiUitOpen
Date:
Tue Nov 03 05:41:06 2015 +0000
Revision:
3:ce2e8481790c
Parent:
2:4e34945b5c00
Child:
4:3c5241f9fbf3
4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:c35b8a23a863 1 //-----------------------------------------------------------
MikamiUitOpen 0:c35b8a23a863 2 // Demo waveform and spectrum display
MikamiUitOpen 3:ce2e8481790c 3 // Tap the screen to begin the spectrum analyzer
MikamiUitOpen 0:c35b8a23a863 4 //
MikamiUitOpen 3:ce2e8481790c 5 // 2015/11/03, Copyright (c) 2015 MIKAMI, Naoki
MikamiUitOpen 0:c35b8a23a863 6 //-----------------------------------------------------------
MikamiUitOpen 0:c35b8a23a863 7
MikamiUitOpen 0:c35b8a23a863 8 #include "vowel_data.hpp"
MikamiUitOpen 0:c35b8a23a863 9 #include "button.hpp"
MikamiUitOpen 0:c35b8a23a863 10 #include "waveform_display.hpp"
MikamiUitOpen 0:c35b8a23a863 11 #include "FFT_Analysis.hpp"
MikamiUitOpen 0:c35b8a23a863 12 #include "SpectrumDisplay.hpp"
MikamiUitOpen 0:c35b8a23a863 13 #include "LPC_Analysis.hpp"
MikamiUitOpen 3:ce2e8481790c 14 #include "PadalingImage.h"
MikamiUitOpen 0:c35b8a23a863 15
MikamiUitOpen 0:c35b8a23a863 16 using namespace Mikami;
MikamiUitOpen 0:c35b8a23a863 17
MikamiUitOpen 0:c35b8a23a863 18 const int N_FFT_ = 512; // number of date for FFT
MikamiUitOpen 0:c35b8a23a863 19 const int X0_ = 50; // Origin for x axis
MikamiUitOpen 0:c35b8a23a863 20 const int Y0_ = 236; // Origin for y axis
MikamiUitOpen 0:c35b8a23a863 21 const float DB1_ = 2.4f; // Pixels for 1 dB
MikamiUitOpen 0:c35b8a23a863 22 const int BIN_ = 1; // Pixels per bin
MikamiUitOpen 3:ce2e8481790c 23 const int W_DB = 60; // Width in dB to be displayed
MikamiUitOpen 0:c35b8a23a863 24
MikamiUitOpen 3:ce2e8481790c 25 const int FS_ = 8000; // Sampling frequency: 8 kHz
MikamiUitOpen 0:c35b8a23a863 26
MikamiUitOpen 0:c35b8a23a863 27 LCD_DISCO_F746NG lcd_;
MikamiUitOpen 0:c35b8a23a863 28 TS_DISCO_F746NG ts_;
MikamiUitOpen 0:c35b8a23a863 29
MikamiUitOpen 0:c35b8a23a863 30 FftAnalyzer fft_(N_DATA_, N_FFT_); // using FFT
MikamiUitOpen 0:c35b8a23a863 31 LpcAnalyzer lpc_(N_DATA_, 10, N_FFT_); // using linear prediction
MikamiUitOpen 0:c35b8a23a863 32
MikamiUitOpen 0:c35b8a23a863 33 int main()
MikamiUitOpen 0:c35b8a23a863 34 {
MikamiUitOpen 0:c35b8a23a863 35 const char AIUEO[5] = {'a', 'i', 'u', 'e', 'o'};
MikamiUitOpen 0:c35b8a23a863 36 int16_t sn[N_DATA_];
MikamiUitOpen 0:c35b8a23a863 37 float sn_f[N_DATA_];
MikamiUitOpen 0:c35b8a23a863 38 float db1[N_FFT_/2+1]; // Log powerspectrum using FFT
MikamiUitOpen 0:c35b8a23a863 39 float db2[N_FFT_/2+1]; // Log powerspectrum using linear prediction
MikamiUitOpen 2:4e34945b5c00 40
MikamiUitOpen 0:c35b8a23a863 41 uint32_t backColor = LCD_COLOR_LIGHTBLUE;
MikamiUitOpen 2:4e34945b5c00 42
MikamiUitOpen 2:4e34945b5c00 43 // Initial image
MikamiUitOpen 2:4e34945b5c00 44 lcd_.DrawBitmap(0, 0, (uint8_t *)hattatsurei);
MikamiUitOpen 2:4e34945b5c00 45
MikamiUitOpen 2:4e34945b5c00 46 bool ok = false;
MikamiUitOpen 2:4e34945b5c00 47 while (!ok) // wait for tapped
MikamiUitOpen 2:4e34945b5c00 48 {
MikamiUitOpen 2:4e34945b5c00 49 TS_StateTypeDef state;
MikamiUitOpen 2:4e34945b5c00 50 ts_.GetState(&state);
MikamiUitOpen 2:4e34945b5c00 51 ok = state.touchDetected;
MikamiUitOpen 2:4e34945b5c00 52 }
MikamiUitOpen 2:4e34945b5c00 53 wait(0.5f);
MikamiUitOpen 2:4e34945b5c00 54
MikamiUitOpen 0:c35b8a23a863 55 lcd_.Clear(backColor);
MikamiUitOpen 0:c35b8a23a863 56
MikamiUitOpen 2:4e34945b5c00 57 Button *buttons[5]; // for select /a/, /i/, /u/, /e/, /o/
MikamiUitOpen 0:c35b8a23a863 58 for (int n=0; n<5; n++)
MikamiUitOpen 0:c35b8a23a863 59 {
MikamiUitOpen 0:c35b8a23a863 60 char strButton[8];
MikamiUitOpen 0:c35b8a23a863 61 sprintf(strButton, "/%c/", AIUEO[n]);
MikamiUitOpen 0:c35b8a23a863 62 buttons[n] = new Button(lcd_, ts_, 430, 15+50*n, 50, 40,
MikamiUitOpen 0:c35b8a23a863 63 LCD_COLOR_BLUE, strButton, Font16);
MikamiUitOpen 0:c35b8a23a863 64 }
MikamiUitOpen 0:c35b8a23a863 65 Button fftButtonBar(lcd_, ts_, 340, 15, 80, 40, LCD_COLOR_MAGENTA, "FFT (Bar)", Font12);
MikamiUitOpen 0:c35b8a23a863 66 Button fftButtonLine(lcd_, ts_, 340, 65, 80, 40, LCD_COLOR_MAGENTA, "FFT (Line)", Font12);
MikamiUitOpen 0:c35b8a23a863 67 Button lpButton(lcd_, ts_, 340, 115, 80, 40, LCD_COLOR_MAGENTA, "LP", Font12);
MikamiUitOpen 0:c35b8a23a863 68 lcd_.SetBackColor(backColor);
MikamiUitOpen 2:4e34945b5c00 69
MikamiUitOpen 3:ce2e8481790c 70 SpectrumDisplay disp(lcd_, N_FFT_, X0_, Y0_, DB1_, BIN_, W_DB, FS_);
MikamiUitOpen 0:c35b8a23a863 71 bool dataOk = false;
MikamiUitOpen 1:2ef356b500f2 72 int vowel = -1;
MikamiUitOpen 0:c35b8a23a863 73 while (true)
MikamiUitOpen 0:c35b8a23a863 74 {
MikamiUitOpen 0:c35b8a23a863 75 for (int k=0; k<N_VOWEL_; k++)
MikamiUitOpen 0:c35b8a23a863 76 {
MikamiUitOpen 3:ce2e8481790c 77 if (buttons[k]->Touched(0xFF0000B0))
MikamiUitOpen 0:c35b8a23a863 78 {
MikamiUitOpen 0:c35b8a23a863 79 for (int n=0; n<N_DATA_; n++) sn[n] = sn_[k][n];
MikamiUitOpen 0:c35b8a23a863 80 WaveformDisplay(lcd_, 50, 40, sn, N_DATA_, backColor);
MikamiUitOpen 2:4e34945b5c00 81
MikamiUitOpen 1:2ef356b500f2 82 if ((vowel != -1) && (k != vowel))
MikamiUitOpen 3:ce2e8481790c 83 buttons[vowel]->ReDraw();
MikamiUitOpen 1:2ef356b500f2 84 vowel = k;
MikamiUitOpen 0:c35b8a23a863 85
MikamiUitOpen 0:c35b8a23a863 86 for (int n=0; n<N_DATA_; n++) sn_f[n] = sn[n];
MikamiUitOpen 0:c35b8a23a863 87 fft_.Execute(sn_f, db1);
MikamiUitOpen 0:c35b8a23a863 88 lpc_.Execute(sn_f, db2);
MikamiUitOpen 0:c35b8a23a863 89 dataOk = true;
MikamiUitOpen 0:c35b8a23a863 90 disp.Clear(backColor);
MikamiUitOpen 2:4e34945b5c00 91
MikamiUitOpen 3:ce2e8481790c 92 fftButtonBar.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 3:ce2e8481790c 93 fftButtonLine.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 3:ce2e8481790c 94 lpButton.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 0:c35b8a23a863 95 }
MikamiUitOpen 0:c35b8a23a863 96 }
MikamiUitOpen 2:4e34945b5c00 97
MikamiUitOpen 0:c35b8a23a863 98 if (fftButtonBar.Touched() && dataOk)
MikamiUitOpen 2:4e34945b5c00 99 {
MikamiUitOpen 3:ce2e8481790c 100 fftButtonBar.Draw(0xFFD000D0);
MikamiUitOpen 3:ce2e8481790c 101 fftButtonLine.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 3:ce2e8481790c 102 lpButton.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 0:c35b8a23a863 103 disp.BarChart(db1, backColor);
MikamiUitOpen 2:4e34945b5c00 104 }
MikamiUitOpen 0:c35b8a23a863 105
MikamiUitOpen 0:c35b8a23a863 106 if (fftButtonLine.Touched() && dataOk)
MikamiUitOpen 2:4e34945b5c00 107 {
MikamiUitOpen 3:ce2e8481790c 108 fftButtonBar.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 3:ce2e8481790c 109 fftButtonLine.Draw(0xFFD000D0);
MikamiUitOpen 3:ce2e8481790c 110 lpButton.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 0:c35b8a23a863 111 disp.LineChart(db1, backColor);
MikamiUitOpen 2:4e34945b5c00 112 }
MikamiUitOpen 0:c35b8a23a863 113
MikamiUitOpen 0:c35b8a23a863 114 if (lpButton.Touched() && dataOk)
MikamiUitOpen 2:4e34945b5c00 115 {
MikamiUitOpen 3:ce2e8481790c 116 fftButtonBar.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 3:ce2e8481790c 117 fftButtonLine.Draw(LCD_COLOR_MAGENTA);
MikamiUitOpen 3:ce2e8481790c 118 lpButton.Draw(0xFFD000D0);
MikamiUitOpen 0:c35b8a23a863 119 disp.LineChart(db2, backColor);
MikamiUitOpen 2:4e34945b5c00 120 }
MikamiUitOpen 0:c35b8a23a863 121
MikamiUitOpen 0:c35b8a23a863 122 wait(0.1);
MikamiUitOpen 0:c35b8a23a863 123 }
MikamiUitOpen 0:c35b8a23a863 124 }