Diff: main.cpp

Revision:

0:9d7f931c704a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Nov 24 12:34:55 2015 +0000
@@ -0,0 +1,91 @@
+//-----------------------------------------------------------
+//  Demo waveform and spectrum display
+//      Tap the screen to begin the spectrum analyzer 
+//  No photo version of "F746_SpectralAnalysis_Example"
+//
+//  2015/11/24, Copyright (c) 2015 MIKAMI, Naoki
+//-----------------------------------------------------------
+
+#include "vowel_data.hpp"
+#include "button_group.hpp"
+#include "waveform_display.hpp"
+#include "FFT_Analysis.hpp"
+#include "SpectrumDisplay.hpp"
+#include "LPC_Analysis.hpp"
+
+using namespace Mikami;
+
+const int N_FFT_ = 512;     // number of date for FFT
+const int X0_ = 50;         // Origin for x axis
+const int Y0_ = 236;        // Origin for y axis
+const float DB1_ = 2.4f;    // Pixels for 1 dB
+const int BIN_ = 1;         // Pixels per bin
+const int W_DB = 60;        // Width in dB to be displayed
+
+const int FS_ = 8000;       // Sampling frequency: 8 kHz
+
+LCD_DISCO_F746NG lcd_;
+TS_DISCO_F746NG ts_;
+
+FftAnalyzer fft_(N_DATA_, N_FFT_);      // using FFT
+LpcAnalyzer lpc_(N_DATA_, 10, N_FFT_);  // using linear prediction
+
+int main()
+{
+    int16_t sn[N_DATA_];
+    float sn_f[N_DATA_];
+    float db1[N_FFT_/2+1];  // Log powerspectrum using FFT
+    float db2[N_FFT_/2+1];  // Log powerspectrum using linear prediction
+
+    uint32_t backColor = 0xFF006A6C;            // teal green
+    lcd_.Clear(backColor);
+
+    const string AIUEO[5] = {"/a/", "/i/", "/u/", "/e/", "/o/"};
+    ButtonGroup aiueo(lcd_, ts_, 430, 15, 50, 40,
+                      LCD_COLOR_BLUE, backColor,
+                      5, AIUEO, 0, 10, 1, Font16);
+
+    const string METHOD[3] = {"FFT (Bar)", "FFT (Line)", "LP"};
+    ButtonGroup method(lcd_, ts_, 340, 15, 80, 40,
+                       LCD_COLOR_BLUE, backColor,
+                       3, METHOD, 0, 10, 1, Font12);
+    uint32_t inActive = backColor & 0xD0FFFFFF;
+    for (int n=0; n<3; n++) method.Draw(n, inActive, LCD_COLOR_LIGHTGRAY);
+
+    SpectrumDisplay disp(lcd_, N_FFT_, X0_, Y0_, DB1_, BIN_, W_DB, FS_);
+    bool dataOk = false;
+    while (true)
+    {
+        int vowel;
+        if (aiueo.GetTouchedNumber(vowel, 0xFF0000B0))
+        {
+            for (int n=0; n<N_DATA_; n++) sn[n] = sn_[vowel][n];
+                WaveformDisplay(lcd_, 50, 40, sn, N_DATA_, backColor);
+
+            for (int n=0; n<N_DATA_; n++) sn_f[n] = sn[n];
+            fft_.Execute(sn_f, db1);
+            lpc_.Execute(sn_f, db2);
+            dataOk = true;
+            disp.Clear(backColor);
+            for (int n=0; n<3; n++) method.Redraw(n);
+        }
+
+        if (dataOk)
+        {
+            int k;
+            if (method.GetTouchedNumber(k, 0xFF0000B0))
+            {
+                switch (k)
+                {
+                    case 0: disp.BarChart(db1, backColor);
+                            break;
+                    case 1: disp.LineChart(db1, backColor);
+                            break;
+                    case 2: disp.LineChart(db2, backColor);
+                            break;
+                }   
+            }
+        }
+        wait(0.1);
+    }
+}