AnalysisBase.cpp

00001 //-------------------------------------------------------
00002 //  Base abstract class for spectrum analysis
00003 //
00004 //  2017/03/30, Copyright (c) 2017 MIKAMI, Naoki
00005 //-------------------------------------------------------
00006 
00007 #include "AnalysisBase.hpp"
00008 
00009 namespace Mikami
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 }