Influence of cochlear implant-like operating conditions on wavelet speech processing

  • Authors:

  • A. Paglialonga;G. Tognola;F. Sibella;M. Parazzini;P. Ravazzani;F. Grandori;G. Baselli

  • Affiliations:

  • Istituto di Ingegneria Biomedica, Consiglio Nazionale delle Ricerche ISIB-CNR, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy and Dipartimento di Bioingegneria, Politecnico di Milano, Piazza L ...;Istituto di Ingegneria Biomedica, Consiglio Nazionale delle Ricerche ISIB-CNR, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy;Istituto di Ingegneria Biomedica, Consiglio Nazionale delle Ricerche ISIB-CNR, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy;Istituto di Ingegneria Biomedica, Consiglio Nazionale delle Ricerche ISIB-CNR, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy;Istituto di Ingegneria Biomedica, Consiglio Nazionale delle Ricerche ISIB-CNR, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy;Istituto di Ingegneria Biomedica, Consiglio Nazionale delle Ricerche ISIB-CNR, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy;Dipartimento di Bioingegneria, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy

  • Venue:
  • Computers in Biology and Medicine
  • Year:
  • 2008

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Abstract

This study assessed the influence of 'non-ideal' operating conditions typical of cochlear implants (CIs) on the behavior of the wavelet transform (WT) when used to process speech. Particular attention was given to the effect of limited stimulation rate and limited number of channels, typical of CI speech processing, on the performance of the WT. Computer simulations and psychoacoustic recognition tests of WT-processed speech were implemented. The crucial role played by the 'non-ideal' operating conditions on WT speech processing was put in evidence. Psychoacoustic recognition tests proved to be fundamental to evaluate feasibility of WT speech processing for CIs.