Transcription of FFT window functions - Chris Bore
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FFT window functions - Chris Bore
Fordwater, Pond Road, Woking, Surrey GU22 0 JZTelephone: (01483) 740138 Fax: (0148) 740136 email: Web: window functionsFFT window functions Limits on FFT analysisLimits on FFT analysisWhen using FFT anaysis to study thefrequency spectrum of signals, thereare limits on resolution betweendifferent frequencies, and ondetectability of a small signal in thepresence of a large are two basic problems: thefact that we can only measure thesignal for a limited time; and thefact that the FFT only calculatesresults for certain discrete frequencyvalues (the 'FFT bins').
Fordwater, Pond Road, Woking, Surrey GU22 0JZ Telephone: (01483) 740138 Fax: (0148) 740136 email: bores@bores.com Web: http://www.bores.com FFT window functions
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