✦ LIBER ✦

Time-frequency analysis as asymptotic method

✍ Scribed by David Vakman

Book ID: 104115964
Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 215 KB
Volume: 340
Category: Article
ISSN: 0016-0032
DOI: 10.1016/s0016-0032(03)00012-7

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✦ Synopsis

The paper states direct analogy between time-frequency analysis and geometric optics. Fourier spectrum becomes time-varying asymptotically, like light waves become rays. This clarifies condition of applicability of time-frequency methods. The most physically justified time-frequency representation is spectrogram with the signal-dependent window.

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