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
MyClasses_Functions/AnalysisBase.hpp
- Committer:
- MikamiUitOpen
- Date:
- 2016-07-23
- Revision:
- 2:1f092ac020e1
- Parent:
- 0:9470a174c910
File content as of revision 2:1f092ac020e1:
//------------------------------------------------------- // Base abstract class for spectrum analysis (Header) // // 2016/07/23, Copyright (c) 2016 MIKAMI, Naoki //------------------------------------------------------- #ifndef BASE_ANALYZER_HPP #define BASE_ANALYZER_HPP #include "Array.hpp" #include "fftReal.hpp" #include "Hamming.hpp" namespace Mikami { class AnalyzerBase { public: // nData: Number of data to be analyzed // nFft: Number of FFT points // nUse: FFT, cepstrum: window width + zero padding // Linear prediction: window width AnalyzerBase(int nData, int nFft, int nUse); virtual ~AnalyzerBase() {} void Execute(const float xn[], float db[]); protected: const int N_DATA_; const int N_FFT_; FftReal fft_; float Norm(Complex x) { return x.real()*x.real() + x.imag()*x.imag(); } private: HammingWindow wHm_; Array<float> xData_; // data to be analyzed Array<float> wData_; // windowd data virtual void Analyze(const float wData[], float db[]) = 0; // disallow copy constructor and assignment operator AnalyzerBase(const AnalyzerBase& ); AnalyzerBase& operator=(const AnalyzerBase& ); }; } #endif // BASE_ANALYZER_HPP