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Discrete Fourier Transform

  • Ken’iti Kido
Chapter
Part of the Undergraduate Lecture Notes in Physics book series (ULNP)

Abstract

The Fourier transform is an integral of the product of a signal (waveform) to be analyzed and a complex exponential function with an arbitrary frequency (see Eq. ( 2.37)). In theoretical discussions, it is possible to deal with continuous functions. However, since a continuous function requires an infinite number of points to describe, it is not suitable for a numerical analysis using a digital computer.

Keywords

Discrete Cosine Transform Discrete Fourier Transform Sine Wave Fourier Coefficient Sample Sequence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Yokohama-shiJapan

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