Consistent time-frequency representations

D. Scott Roberts, Douglas L Jones

Research output: Contribution to journalConference article

Abstract

This paper develops nonnegative, high-resolution time-frequency representations (TFRs) that correspond with intuitive notions of energy distribution. These so-called consistent TFRs require the desired representation to be consistent with a set of spectrogram-based energy measurements. By formulating the desired representation as the solution to a constrained optimization problem, it can be solved using a gradient-projection technique. The consistent TFR demonstrates superior performance compared to existing techniques on a variety of test signals and biological data. The result is a high-resolution, nonnegative, intuitively-satisfying TFR that should prove to be an excellent tool for exploratory data analysis.

Original languageEnglish (US)
Pages (from-to)445-448
Number of pages4
JournalICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume6
StatePublished - Sep 25 2003
Event2003 IEEE International Conference on Accoustics, Speech, and Signal Processing - Hong Kong, Hong Kong
Duration: Apr 6 2003Apr 10 2003

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Electric power measurement
Constrained optimization

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

Consistent time-frequency representations. / Roberts, D. Scott; Jones, Douglas L.

In: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, Vol. 6, 25.09.2003, p. 445-448.

Research output: Contribution to journalConference article

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