Ventricular Late Potentials Characterization in Time-Frequency Domain by Means of a Wavelet Transform

Olivier Meste, Hervé Rix, Pere Caminal, Nitish V. Thakor

Research output: Contribution to journalArticle


The main transforms of Cohen’s class allow signal representation simultaneously in time and frequency domains. Wavelet transforms make it possible to link the temporal window width to the analyzing frequency and leads to a “modified wavelet transform” which improves resolution both in time and frequency. A simulation study illustrates the artifacts of every time-frequency representation (TFR) on pure sinusoids and gives performance evaluation of the different methods when searching a sinusoid embedded in a QRS complex. Analyses of real signals from healthy and pathological subjects confirm the simulation results and complete the characterization of ventricular late potentials (VLP) yet detected by signal averaging.

Original languageEnglish (US)
Pages (from-to)625-634
Number of pages10
JournalIEEE Transactions on Biomedical Engineering
Issue number7
StatePublished - Jul 1994


ASJC Scopus subject areas

  • Biomedical Engineering

Cite this