Improved time-frequency filtering using an STFT analysis-modification-synthesis method

Michael L. Kramer, Douglas L. Jones

Research output: Contribution to conferencePaperpeer-review

Abstract

Time-frequency representations provide a convenient method for analyzing signals whose frequency content changes with time, and specifically those signals with components that overlap in time and/or frequency. In this paper we suggest a technique for optimally concentrating components of a signal in the time-frequency plane via a particular choice of analysis window for the short-time Fourier transform (STFT), as well as an efficient method of optimal least-squares synthesis of a component of interest from the STFT. Using the described synthesis method in conjunction with an optimally localized STFT yields a very accurate estimate of a component that may not otherwise be separable from other components or noise in the signal.

Original languageEnglish (US)
Pages264-267
Number of pages4
StatePublished - Dec 1 1994
EventProceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis - Philadelphia, PA, USA
Duration: Oct 25 1994Oct 28 1994

Other

OtherProceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis
CityPhiladelphia, PA, USA
Period10/25/9410/28/94

ASJC Scopus subject areas

  • Engineering(all)

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