Mladen Adamovic / Spectrogram

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Dependencies:   F746_GUI F746_SAI_IO UIT_FFT_Real

Fork of F746_Spectrogram by 不韋 呂

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Show/hide line numbers AnalysisBase.cpp Source File

AnalysisBase.cpp

00001 /********************************************************
00002  *  Base abstract class for spectrum analysis
00003  *
00004  *  Mladen Adamovic, 3326/2016
00005  ********************************************************/
00006 
00007 #include "AnalysisBase.hpp"
00008 
00009 namespace etf
00010 {
00011     AnalyzerBase::AnalyzerBase(int nData, int nFft, int nUse)
00012         : N_DATA_(nData), N_FFT_(nFft),
00013           fft_(nFft), wHm_(nData-1, nUse),
00014           xData_(nUse), wData_(nUse) {}
00015 
00016     void AnalyzerBase::Execute(const float xn[], float db[])
00017     {
00018         // Differencing
00019         for (int n=0; n<N_DATA_-1; n++)
00020             xData_[n] = xn[n+1] - 0.8f*xn[n];
00021             
00022         // Windowing
00023         wHm_.Execute(xData_, wData_);
00024 
00025         Analyze(wData_, db);
00026     }
00027 }
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