不韋 呂 / Mbed 2 deprecated F746_RealtimeSpectrumAnalyzer_MEMS_Mic

Version using MEMS microphone and CODEC for the program "F746_RealtimeSpectrumAnalyzer". "F746_RealtimeSpectrumAnalyzer" の入力を MEMS のマイクと CODEC に変更．このプログラムは Tomona Nanase さんが作成し DISCO-F746NG_Oscilloscope の名前で登録しているプログラムで， CODEC を使って入力する部分を参考にして作成．このプログラムの説明は，CQ出版社のインターフェース誌，2016年4月号に掲載．

Dependencies:   BSP_DISCO_F746NG BUTTON_GROUP LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed

MyClasses_Functions/AnalysisBase.hpp@8:e7dc8658c5cd, 2016-04-19 (annotated)

Committer:
MikamiUitOpen
Date:
Tue Apr 19 09:35:24 2016 +0000
Revision:
8:e7dc8658c5cd
Parent:
0:0e5131366580 
9

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 0:0e5131366580 1 //-------------------------------------------------------
MikamiUitOpen 0:0e5131366580 2 // Base class for spectrum analysis (Header)
MikamiUitOpen 0:0e5131366580 3 //
MikamiUitOpen 0:0e5131366580 4 // 2015/12/15, Copyright (c) 2015 MIKAMI, Naoki
MikamiUitOpen 0:0e5131366580 5 //-------------------------------------------------------
MikamiUitOpen 0:0e5131366580 6
MikamiUitOpen 0:0e5131366580 7 #ifndef BASE_ANALYZER_HPP
MikamiUitOpen 0:0e5131366580 8 #define BASE_ANALYZER_HPP
MikamiUitOpen 0:0e5131366580 9
MikamiUitOpen 0:0e5131366580 10 #include "fftReal.hpp"
MikamiUitOpen 0:0e5131366580 11 #include "Hamming.hpp"
MikamiUitOpen 0:0e5131366580 12
MikamiUitOpen 0:0e5131366580 13 namespace Mikami
MikamiUitOpen 0:0e5131366580 14 {
MikamiUitOpen 0:0e5131366580 15 class AnalyzerBase
MikamiUitOpen 0:0e5131366580 16 {
MikamiUitOpen 0:0e5131366580 17 public:
MikamiUitOpen 0:0e5131366580 18 // nData: Number of data to be analyzed
MikamiUitOpen 0:0e5131366580 19 // nFft: Number of FFT points
MikamiUitOpen 0:0e5131366580 20 // nUse: FFT, cepstrum: window width + zero padding
MikamiUitOpen 0:0e5131366580 21 // Linear prediction: window width
MikamiUitOpen 0:0e5131366580 22 AnalyzerBase(int nData, int nFft, int nUse);
MikamiUitOpen 0:0e5131366580 23 virtual ~AnalyzerBase();
MikamiUitOpen 0:0e5131366580 24 void Execute(const float xn[], float db[]);
MikamiUitOpen 0:0e5131366580 25
MikamiUitOpen 0:0e5131366580 26 protected:
MikamiUitOpen 0:0e5131366580 27 const int N_DATA_;
MikamiUitOpen 0:0e5131366580 28 const int N_FFT_;
MikamiUitOpen 0:0e5131366580 29
MikamiUitOpen 0:0e5131366580 30 FftReal fft_;
MikamiUitOpen 0:0e5131366580 31
MikamiUitOpen 0:0e5131366580 32 float Norm(Complex x)
MikamiUitOpen 0:0e5131366580 33 { return x.real()*x.real() + x.imag()*x.imag(); }
MikamiUitOpen 0:0e5131366580 34
MikamiUitOpen 0:0e5131366580 35 private:
MikamiUitOpen 0:0e5131366580 36 HammingWindow wHm_;
MikamiUitOpen 0:0e5131366580 37
MikamiUitOpen 0:0e5131366580 38 float* xData_; // data to be analyzed
MikamiUitOpen 0:0e5131366580 39 float* wData_; // windowd data
MikamiUitOpen 0:0e5131366580 40
MikamiUitOpen 0:0e5131366580 41 virtual void Analyze(const float wData[], float db[]) = 0;
MikamiUitOpen 0:0e5131366580 42
MikamiUitOpen 0:0e5131366580 43 // disallow copy constructor and assignment operator
MikamiUitOpen 0:0e5131366580 44 AnalyzerBase(const AnalyzerBase& );
MikamiUitOpen 0:0e5131366580 45 AnalyzerBase& operator=(const AnalyzerBase& );
MikamiUitOpen 0:0e5131366580 46 };
MikamiUitOpen 0:0e5131366580 47 }
MikamiUitOpen 0:0e5131366580 48 #endif // BASE_ANALYZER_HPP
MikamiUitOpen 0:0e5131366580 49