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Dependencies: BSP_DISCO_F746NG BUTTON_GROUP LCD_DISCO_F746NG TS_DISCO_F746NG UIT_FFT_Real mbed
LPC_Analysis.hpp
00001 //--------------------------------------------------------------- 00002 // Class for spectrum analysis using linear prediction (Header) 00003 // Copyright (c) 2014 MIKAMI, Naoki, 2014/12/30 00004 //--------------------------------------------------------------- 00005 00006 #ifndef LPC_ANALYZER_HPP 00007 #define LPC_ANALYZER_HPP 00008 00009 #include "fftReal.hpp" 00010 #include "Hamming.hpp" 00011 #include "LinearPrediction.hpp" 00012 00013 namespace Mikami 00014 { 00015 class LpcAnalyzer 00016 { 00017 public: 00018 LpcAnalyzer(int nData, int order, int nFft); 00019 ~LpcAnalyzer(); 00020 void Execute(float xn[], float db[]); 00021 private: 00022 const int N_DATA_; 00023 const int ORDER_; 00024 const int N_FFT_; 00025 00026 HammingWindow hm_; 00027 LinearPred lp_; 00028 FftReal fft_; 00029 00030 float* xData_; // Data to be analyzed 00031 float* an_; 00032 float* xFft_; // Input for FFT 00033 Complex* yFft_; // Output of FFT 00034 float* normY_; // Powerspectrum 00035 00036 float Sqr(float x) { return x*x; } 00037 }; 00038 } 00039 #endif // LPC_ANALYZER_HPP 00040
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