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Journal of the Acoustical Society of America

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Dec 1986

Volume 80, Issue S1, pp. S1-S128

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back to top Session BB. Noise V, Shock and Vibration V, and Musical Acoustics IV: Demonstration Experiments to Show Fundamentals of FFT Analyzers
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Demonstration experiments to show fundamentals of FFT analyzers (A)

Frank H. Brittain and John Pryshepa

J. Acoust. Soc. Am. Volume 80, Issue S1, pp. S58-S58 (1986); (1 page)

Online Publication Date: 13 Aug 2005

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A series of demonstration experiments will be performed to supplement the special session on FFT analyzers for noise and vibration from a user's perspective. These experiments will present some fundamentals of FFT analyzers, primarily single‐channel analyzers. Fourier representation of a periodic signal will be used to illustrate the time and frequency domains. The interrelationship between frequency range, number of lines, and resolution will be shown. The concepts of sampling, folding, leakage, and windows will also be illustrated. Some noise and vibration data will be used to indicate the types of information that can be obtained using FFT analyzers. The experiments will be used to demonstrate fundamentals common to all analyzers and not any specific hardware.
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