Basis expansion time-frequency analysis
id:
basis-expansion-time-frequency-analysis-242-8896899
title:
Basis expansion time-frequency analysis
text:
Linear expansions in a single basis, whether it is a Fourier series, wavelet, or any other basis, are not suitable enough. A Fourier basis provided a poor representation of functions well localized in time, and wavelet bases are not well adapted to represent functions whose Fourier transforms have a narrow high frequency support. In both cases, it is difficult to detect and identify the signal patterns from their expansion coefficients, because the information is diluted across the whole basis.
brand slug:
wiki
category slug:
encyclopedia
description:
Time-frequency analysis
original url:
https://en.wikipedia.org/wiki/Basis_expansion_time-frequency_analysis
date created:
date modified:
2021-02-03T17:07:01Z
main entity:
{"identifier":"Q28407007","url":"https://www.wikidata.org/entity/Q28407007"}
image:
fields total:
13
integrity:
14