Importance of pitch and periodicity to Chinese-speaking cochlear implant patients

Xin Luo, Qian Jie Fu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Scopus citations

Abstract

This study examines the relative importance of pitch and periodicity to Chinese speech recognition by normal-hearing subjects listening to a cochlear implant simulation. Three carrier band conditions were tested, each of which provided different amounts of pitch and periodicity information: 1) noise-band carriers for all speech segments, 2) pulse train carriers for voiced speech segments, in which the rate followed the fundamental frequency (F0) of the speech signal, and 3) fixed-rate (150 Hz) pulse train carriers for voiced speech segments. The noise-band carriers preserved little pitch and periodicity information, as all temporal cues were limited by the 50-Hz temporal envelope extracted from each frequency band, The K)-controlled pulse train carriers preserved all pitch and periodicity information. The fixed-rate pulse train carriers preserved periodicity information, but no pitch information. Results showed that different carriers produced significantly different amounts of Chinese speech recognition, with the F0-controlled pulse train carriers producing the best performance. These results reflect the need to deliver adequate amounts of both pitch and periodicity information to Chinese-speaking cochleae implant patients.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume4
StatePublished - 2004
Externally publishedYes
EventProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing - Montreal, Que, Canada
Duration: May 17 2004May 21 2004

Other

OtherProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing
CountryCanada
CityMontreal, Que
Period5/17/045/21/04

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics

Cite this

Luo, X., & Fu, Q. J. (2004). Importance of pitch and periodicity to Chinese-speaking cochlear implant patients. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (Vol. 4)