Time Aliasing: A Digital Data Processing Phenomenon

[+] Author and Article Information
R. J. Thornhill

International Business Machines Corporation, Austin, Texas 78758

C. C. Smith

Department of Mechanical Engineering, Brigham Young University, Provo, Utah 84602

J. Dyn. Sys., Meas., Control 105(4), 232-237 (Dec 01, 1983) (6 pages) doi:10.1115/1.3140664 History: Received April 14, 1981; Online July 21, 2009


The frequency sampling theorem is developed and interpreted for a function of frequency which was sampled either directly or indirectly by spectral identification techniques. An example of the results of time aliasing when the frequency resolution is too coarse is presented. A generalized window is developed which implements a zoom inverse discrete Fourier transform for avoiding undesirable time aliasing effects.

Copyright © 1983 by ASME
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