不韋 呂 / F746_Spectrogram

Realtime spectrogram for DISCO-F746NG. On-board MEMS microphone is used for input sound signal. リアルタイムスペクトログラム．入力：MEMSマイク

Dependencies:   F746_GUI F746_SAI_IO UIT_FFT_Real

main.cpp@6:b3885567877c, 2017-04-10 (annotated)

Committer:
MikamiUitOpen
Date:
Mon Apr 10 13:43:07 2017 +0000
Revision:
6:b3885567877c
Parent:
5:c0877670b0ac 
7

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:9470a174c910 1 //------------------------------------------------
MikamiUitOpen 3:6a2c8ff46f73 2 // リアルタイム・スペクトログラム
MikamiUitOpen 3:6a2c8ff46f73 3 // 入力： MEMS マイク
MikamiUitOpen 0:9470a174c910 4 //
MikamiUitOpen 6:b3885567877c 5 // 2017/04/10, Copyright (c) 2017 MIKAMI, Naoki
MikamiUitOpen 0:9470a174c910 6 //------------------------------------------------
MikamiUitOpen 0:9470a174c910 7
MikamiUitOpen 0:9470a174c910 8 #include "SAI_InOut.hpp"
MikamiUitOpen 2:1f092ac020e1 9 #include "F746_GUI.hpp"
MikamiUitOpen 0:9470a174c910 10 #include "MethodCollection.hpp"
MikamiUitOpen 0:9470a174c910 11 using namespace Mikami;
MikamiUitOpen 0:9470a174c910 12
MikamiUitOpen 0:9470a174c910 13 int main()
MikamiUitOpen 0:9470a174c910 14 {
MikamiUitOpen 6:b3885567877c 15 const int FS = AUDIO_FREQUENCY_16K; // 標本化周波数：16 kHz
MikamiUitOpen 0:9470a174c910 16 const int N_FFT = 512; // FFT の点数
MikamiUitOpen 6:b3885567877c 17 SaiIO mySai(SaiIO::INPUT, N_FFT+1, FS, // 入力用
MikamiUitOpen 6:b3885567877c 18 INPUT_DEVICE_DIGITAL_MICROPHONE_2); // 入力デバイス：MEMS マイク
MikamiUitOpen 0:9470a174c910 19
MikamiUitOpen 6:b3885567877c 20 LCD_DISCO_F746NG &lcd = GuiBase::GetLcd(); // LCD 表示器のオブジェクトの参照を取得
MikamiUitOpen 5:c0877670b0ac 21 lcd.Clear(GuiBase::ENUM_BACK);
MikamiUitOpen 2:1f092ac020e1 22 Label myLabel1(240, 2, "Real-time spectrogram", Label::CENTER, Font16);
MikamiUitOpen 0:9470a174c910 23
MikamiUitOpen 0:9470a174c910 24 // ButtonGroup の設定
MikamiUitOpen 0:9470a174c910 25 const uint16_t B_W = 50;
MikamiUitOpen 0:9470a174c910 26 const uint16_t B_Y = 242;
MikamiUitOpen 0:9470a174c910 27 const uint16_t B_H = 30;
MikamiUitOpen 0:9470a174c910 28 const string RUN_STOP[2] = {"RUN", "STOP"};
MikamiUitOpen 0:9470a174c910 29 ButtonGroup runStop(325, B_Y, B_W, B_H, 2, RUN_STOP, 0, 0, 2, 1);
MikamiUitOpen 6:b3885567877c 30
MikamiUitOpen 6:b3885567877c 31 Button clearButton(430, B_Y, B_W, B_H, "CLEAR");
MikamiUitOpen 6:b3885567877c 32 clearButton.Inactivate();
MikamiUitOpen 0:9470a174c910 33
MikamiUitOpen 0:9470a174c910 34 // 座標軸
MikamiUitOpen 6:b3885567877c 35 const uint16_t X0 = 40; // 表示領域の x 座標の原点
MikamiUitOpen 6:b3885567877c 36 const uint16_t Y0 = 200; // 表示領域の y 座標の原点
MikamiUitOpen 6:b3885567877c 37 const uint16_t PX_1KHZ = 32; // 1 kHz に対応するピクセル数
MikamiUitOpen 6:b3885567877c 38 const uint16_t H0 = PX_1KHZ*5; // 周波数軸の長さ（5 kHz に対応）に対応するピクセル数
MikamiUitOpen 6:b3885567877c 39 const uint16_t W0 = 360; // 横方向の全体の表示の幅（単位：ピクセル）
MikamiUitOpen 6:b3885567877c 40 const float FRAME = (N_FFT/(float)FS)*1000.0f; // 1 フレームに対応する時間（単位：ms）
MikamiUitOpen 6:b3885567877c 41 const uint16_t H_BAR = 2; // 表示する際の 1 フレームに対応する横方向のピクセル数
MikamiUitOpen 6:b3885567877c 42 const uint16_t MS100 = 100*H_BAR/FRAME; // 100 ms に対応するピクセル数
MikamiUitOpen 6:b3885567877c 43 const uint32_t AXIS_COLOR = LCD_COLOR_WHITE;
MikamiUitOpen 0:9470a174c910 44 DrawAxis(X0, Y0, W0, H0, AXIS_COLOR, MS100, PX_1KHZ, lcd);
MikamiUitOpen 0:9470a174c910 45
MikamiUitOpen 0:9470a174c910 46 // 色と dB の関係の表示
MikamiUitOpen 0:9470a174c910 47 ColorDb(Y0, AXIS_COLOR, lcd);
MikamiUitOpen 6:b3885567877c 48
MikamiUitOpen 6:b3885567877c 49 Array<float> sn(N_FFT+1); // スペクトル解析する信号を格納するバッファ
MikamiUitOpen 6:b3885567877c 50 Array<float> db(N_FFT/2+1); // 計算された対数スペクトルを格納するバッファ
MikamiUitOpen 6:b3885567877c 51 // スペクトルの大きさに対応する色データを格納する２次元配列
MikamiUitOpen 6:b3885567877c 52 Matrix<uint32_t> spectra(W0/H_BAR, H0+1, GuiBase::ENUM_BACK);
MikamiUitOpen 0:9470a174c910 53 FftAnalyzer fftAnalyzer(N_FFT+1, N_FFT);
MikamiUitOpen 0:9470a174c910 54
MikamiUitOpen 0:9470a174c910 55 // ループ内で使う変数の初期化
MikamiUitOpen 6:b3885567877c 56 int stop = 0; // 0: run, 1: stop
MikamiUitOpen 3:6a2c8ff46f73 57
MikamiUitOpen 6:b3885567877c 58 while(!runStop.Touched(0)) {} // "RUN" をタッチするまで待つ
MikamiUitOpen 0:9470a174c910 59 // データ読み込み開始
MikamiUitOpen 0:9470a174c910 60 mySai.RecordIn();
MikamiUitOpen 6:b3885567877c 61 while(!mySai.IsCaptured()) {}
MikamiUitOpen 6:b3885567877c 62
MikamiUitOpen 0:9470a174c910 63 while (true)
MikamiUitOpen 0:9470a174c910 64 {
MikamiUitOpen 0:9470a174c910 65 runStop.GetTouchedNumber(stop);
MikamiUitOpen 0:9470a174c910 66 if (stop == 0)
MikamiUitOpen 0:9470a174c910 67 {
MikamiUitOpen 6:b3885567877c 68 clearButton.Inactivate();
MikamiUitOpen 0:9470a174c910 69 if (mySai.IsCaptured())
MikamiUitOpen 0:9470a174c910 70 {
MikamiUitOpen 0:9470a174c910 71 // １フレーム分の信号の入力
MikamiUitOpen 0:9470a174c910 72 for (int n=0; n<mySai.GetLength(); n++)
MikamiUitOpen 0:9470a174c910 73 {
MikamiUitOpen 0:9470a174c910 74 int16_t xL, xR;
MikamiUitOpen 0:9470a174c910 75 mySai.Input(xL, xR);
MikamiUitOpen 0:9470a174c910 76 sn[n] = (float)xL;
MikamiUitOpen 0:9470a174c910 77 }
MikamiUitOpen 0:9470a174c910 78
MikamiUitOpen 0:9470a174c910 79 // スペクトルの更新
MikamiUitOpen 0:9470a174c910 80 SpectrumUpdate(spectra, fftAnalyzer, sn, db);
MikamiUitOpen 0:9470a174c910 81 // スペクトルの表示
MikamiUitOpen 0:9470a174c910 82 DisplaySpectrum(spectra, X0, Y0, H_BAR, lcd);
MikamiUitOpen 0:9470a174c910 83 }
MikamiUitOpen 0:9470a174c910 84 }
MikamiUitOpen 0:9470a174c910 85 else
MikamiUitOpen 0:9470a174c910 86 {
MikamiUitOpen 6:b3885567877c 87 clearButton.Activate();
MikamiUitOpen 6:b3885567877c 88 if (clearButton.Touched())
MikamiUitOpen 0:9470a174c910 89 {
MikamiUitOpen 6:b3885567877c 90 spectra.Fill(GuiBase::ENUM_BACK); // スペクトルの表示をクリアするための処理
MikamiUitOpen 6:b3885567877c 91 DisplaySpectrum(spectra, X0, Y0, H_BAR, lcd); // スペクトルの表示をクリア
MikamiUitOpen 6:b3885567877c 92 clearButton.Draw();
MikamiUitOpen 0:9470a174c910 93 }
MikamiUitOpen 0:9470a174c910 94 }
MikamiUitOpen 0:9470a174c910 95 }
MikamiUitOpen 0:9470a174c910 96 }
MikamiUitOpen 6:b3885567877c 97