The effect of dichotic processing on the perception of binaural cues

Akiko Amano-Kusumoto, Justin M. Aronoff, Motokuni Itoh, Sigfrid D. Soli

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

Abstract

Hearing impaired individuals often have difficulty hearing in noise because of reduced spectral resolution. Previous research suggests that dichotic processing, where information from neighboring frequency regions is sent to opposite ears, may benefit those individuals. However, dichotic processing can degrade binaural cues, reducing spatial release from masking and localization accuracy. In this study, an eight-channel filter bank was used to create diotic and dichotic stimuli as well as partial dichotic stimuli that used a combination of diotic and dichotic filters. To test the effect of dichotic processing on binaural cues, speech intelligibility in noise and sound localization were evaluated in normal hearing subjects. Results showed that dichotic processing degrades speech intelligibility in spatially separated noise and sound localization, but that degradation can be minimized by using partial dichotic filtering.

Original languageEnglish (US)
Title of host publication13th Annual Conference of the International Speech Communication Association 2012, INTERSPEECH 2012
Pages1474-1477
Number of pages4
StatePublished - Dec 1 2012
Externally publishedYes
Event13th Annual Conference of the International Speech Communication Association 2012, INTERSPEECH 2012 - Portland, OR, United States
Duration: Sep 9 2012Sep 13 2012

Publication series

Name13th Annual Conference of the International Speech Communication Association 2012, INTERSPEECH 2012
Volume2

Other

Other13th Annual Conference of the International Speech Communication Association 2012, INTERSPEECH 2012
CountryUnited States
CityPortland, OR
Period9/9/129/13/12

Keywords

  • Dichotic listening
  • Release from masking
  • Sound localization
  • Upward spread of masking

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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  • Cite this

    Amano-Kusumoto, A., Aronoff, J. M., Itoh, M., & Soli, S. D. (2012). The effect of dichotic processing on the perception of binaural cues. In 13th Annual Conference of the International Speech Communication Association 2012, INTERSPEECH 2012 (pp. 1474-1477). (13th Annual Conference of the International Speech Communication Association 2012, INTERSPEECH 2012; Vol. 2).