Fourier Transform in Network Signal Processing

The Fourier Transform is extensively used in the field of Signal Processing.

Fourier transform is used to filter signals by removing unnecessary noise. “The impulse in time can be thought of as an infinite sum of sinusoids at every possible frequency and the Fourier transform of the impulse is a constant with respect to frequency thus we can know how a system reacts to every possible frequency[1].” Using this, every signal input can be converted with the noise filtered out and then analyzed.

[1] http://www.thefouriertransform.com/applications/filtering.php
[2] https://see.stanford.edu/materials/lsoftaee261/book-fall-07.pdf

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