不韋 呂 / F746_MySoundMachine

Integrated program of 4 different kinds of application programs for processing sound signal. 4種類のサウンド信号処理を統合したプログラム．

Dependencies:   F746_GUI F746_SAI_IO FrequencyResponseDrawer SD_PlayerSkeleton UIT_FFT_Real

MySpectrogram/AnalysisBase.hpp@16:d60e5187fd31, 2017-04-27 (annotated)

Committer:
MikamiUitOpen
Date:
Thu Apr 27 23:55:53 2017 +0000
Revision:
16:d60e5187fd31
Parent:
15:fac50dd1de44 
17

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MikamiUitOpen 15:fac50dd1de44 1 //-------------------------------------------------------
MikamiUitOpen 15:fac50dd1de44 2 // Base abstract class for spectrum analysis (Header)
MikamiUitOpen 15:fac50dd1de44 3 //
MikamiUitOpen 15:fac50dd1de44 4 // 2017/03/30, Copyright (c) 2017 MIKAMI, Naoki
MikamiUitOpen 15:fac50dd1de44 5 //-------------------------------------------------------
MikamiUitOpen 15:fac50dd1de44 6
MikamiUitOpen 15:fac50dd1de44 7 #ifndef BASE_ANALYZER_HPP
MikamiUitOpen 15:fac50dd1de44 8 #define BASE_ANALYZER_HPP
MikamiUitOpen 15:fac50dd1de44 9
MikamiUitOpen 15:fac50dd1de44 10 #include "Array.hpp"
MikamiUitOpen 15:fac50dd1de44 11 #include "fftReal.hpp"
MikamiUitOpen 15:fac50dd1de44 12 #include "Hamming.hpp"
MikamiUitOpen 15:fac50dd1de44 13
MikamiUitOpen 15:fac50dd1de44 14 namespace Mikami
MikamiUitOpen 15:fac50dd1de44 15 {
MikamiUitOpen 15:fac50dd1de44 16 class AnalyzerBase
MikamiUitOpen 15:fac50dd1de44 17 {
MikamiUitOpen 15:fac50dd1de44 18 public:
MikamiUitOpen 15:fac50dd1de44 19 // nData: Number of data to be analyzed
MikamiUitOpen 15:fac50dd1de44 20 // nFft: Number of FFT points
MikamiUitOpen 15:fac50dd1de44 21 // nUse: FFT, cepstrum: window width + zero padding
MikamiUitOpen 15:fac50dd1de44 22 // Linear prediction: window width
MikamiUitOpen 15:fac50dd1de44 23 AnalyzerBase(int nData, int nFft, int nUse);
MikamiUitOpen 15:fac50dd1de44 24 virtual ~AnalyzerBase() {}
MikamiUitOpen 15:fac50dd1de44 25 void Execute(const float xn[], float db[]);
MikamiUitOpen 15:fac50dd1de44 26
MikamiUitOpen 15:fac50dd1de44 27 protected:
MikamiUitOpen 15:fac50dd1de44 28 const int N_DATA_;
MikamiUitOpen 15:fac50dd1de44 29 const int N_FFT_;
MikamiUitOpen 15:fac50dd1de44 30
MikamiUitOpen 15:fac50dd1de44 31 FftReal fft_;
MikamiUitOpen 15:fac50dd1de44 32
MikamiUitOpen 15:fac50dd1de44 33 float Norm(Complex x)
MikamiUitOpen 15:fac50dd1de44 34 { return x.real()*x.real() + x.imag()*x.imag(); }
MikamiUitOpen 15:fac50dd1de44 35
MikamiUitOpen 15:fac50dd1de44 36 private:
MikamiUitOpen 15:fac50dd1de44 37 HammingWindow wHm_;
MikamiUitOpen 15:fac50dd1de44 38
MikamiUitOpen 15:fac50dd1de44 39 Array<float> xData_; // data to be analyzed
MikamiUitOpen 15:fac50dd1de44 40 Array<float> wData_; // windowd data
MikamiUitOpen 15:fac50dd1de44 41
MikamiUitOpen 15:fac50dd1de44 42 virtual void Analyze(const float wData[], float db[]) = 0;
MikamiUitOpen 15:fac50dd1de44 43
MikamiUitOpen 15:fac50dd1de44 44 // disallow copy constructor and assignment operator
MikamiUitOpen 15:fac50dd1de44 45 AnalyzerBase(const AnalyzerBase& );
MikamiUitOpen 15:fac50dd1de44 46 AnalyzerBase& operator=(const AnalyzerBase& );
MikamiUitOpen 15:fac50dd1de44 47 };
MikamiUitOpen 15:fac50dd1de44 48 }
MikamiUitOpen 15:fac50dd1de44 49 #endif // BASE_ANALYZER_HPP
MikamiUitOpen 15:fac50dd1de44 50