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The DFT
William L. Briggs
Van Emden Henson
其他書名
An Owners' Manual for the Discrete Fourier Transform
出版
SIAM
, 1995-01-01
主題
Mathematics / General
Mathematics / Applied
ISBN
0898713420
9780898713428
URL
http://books.google.com.hk/books?id=MEuVNnYQSn0C&hl=&source=gbs_api
EBook
SAMPLE
註釋
Just as a prism separates white light into its component bands of colored light, so the discrete Fourier transform (DFT) is used to separate a signal into its constituent frequencies. Just as a pair of sunglasses reduces the glare of white light, permitting only the softer green light to pass, so the DFT may be used to modify a signal to achieve a desired effect. In fact, by analyzing the component frequencies of a signal or any system, the DFT can be used in an astonishing variety of problems. Among the applications of the DFT are digital signal processing, oil and gas exploration, medical imaging, aircraft and spacecraft guidance, and the solution of differential equations of physics and engineering. The DFT: An Owner's Manual for the Discrete Fourier Transform explores both the practical and theoretical aspects of the DFT, one of the most widely used tools in science and engineering.