Fft algorithm is a very good reference program, worth a visit.

waveinFFT_demo
..............\codeproject_template.html
..............\Fourier.cpp
..............\Fourier.h
..............\MemoryDC.h
..............\ReadMe.txt
..............\Recorder.cpp
..............\Recorder.h
..............\Release
..............\.......\BuildLog.htm
..............\.......\Fourier.obj
..............\.......\mt.dep
..............\.......\Recorder.obj
..............\.......\SpectrumGraph.obj
..............\.......\StdAfx.obj
..............\.......\vc80.idb
..............\.......\waveInFFT.exe
..............\.......\waveInFFT.exe.intermediate.manifest
..............\.......\waveInFFT.obj
..............\.......\waveInFFT.pch
..............\.......\waveInFFT.res
..............\.......\waveInFFTDlg.obj
..............\res
..............\resource.h
..............\...\waveInFFT.ico
..............\...\waveInFFT.rc2
..............\SpectrumGraph.cpp
..............\SpectrumGraph.h
..............\StdAfx.cpp
..............\StdAfx.h
..............\waveInFFT.cpp
..............\waveInFFT.dsp
..............\waveInFFT.dsw
..............\waveInFFT.h
..............\waveInFFT.ncb
..............\waveInFFT.rc
..............\waveInFFT.sln
..............\waveInFFT.sln.old
..............\waveInFFT.suo
..............\waveInFFT.suo.old
..............\waveInFFT.vcproj
..............\waveInFFT.vcproj.7.10.old
..............\waveInFFT.vcproj.FREDHOME.Frederick.user
..............\waveInFFT.vcproj.ZEHAN-ERIC.Administrator.user
..............\waveInFFTDlg.cpp
..............\waveInFFTDlg.h

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