不韋 呂
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
Diff: SpactrumAnalysisClasses/SpectrumDisplay.hpp
- Revision:
- 0:c35b8a23a863
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SpactrumAnalysisClasses/SpectrumDisplay.hpp Mon Oct 26 08:06:57 2015 +0000
@@ -0,0 +1,38 @@
+//-------------------------------------------------------
+// Class for display spectrum
+// Copyright (c) 2015 MIKAMI, Naoki, 2015/10/26
+//-------------------------------------------------------
+
+#ifndef SPECTRUM_DISPLAY_HPP
+#define SPECTRUM_DISPLAY_HPP
+
+#include "LCD_DISCO_F746NG.h"
+
+namespace Mikami
+{
+ class SpectrumDisplay
+ {
+ public:
+ SpectrumDisplay(LCD_DISCO_F746NG &lcd,
+ int nFft, int x0, int y0,
+ float db1, int bin, float maxDb, int fs);
+ void BarChart(float db[], uint32_t backColor);
+ void LineChart(float db[], uint32_t backColor);
+ void Clear(uint32_t backColor);
+
+ private:
+ const int N_FFT_; // number of date for FFT
+ const int X0_; // Origin for x axis
+ const int Y0_; // Origin for y axis
+ const float DB1_; // Pixels for 1 dB
+ const int BIN_; // Pixels per bin
+ const float MAX_DB_; // Maximum dB
+ const int FS_; // Sampling frequency: 10 kHz
+
+ LCD_DISCO_F746NG *const LCD_;
+
+ void AxisX(); // x-axis
+ void AxisY(); // y-axis
+ };
+}
+#endif // SPECTRUM_DISPLAY_HPP