Skip to main content
Article thumbnail
Location of Repository

Modulation enhancement of speech as preprocessing for reverberant chambers with the hearing-impaired

By A. Kusumoto, T. Arai, T. Kitamura, M. Takahashi and Y. Murahara

Abstract

In this paper we report on a method for reducing the degradation of speech intelligibility in public halls caused severe reverberation. Hall reverberation makes speech more difficult to understand, particularly for the hearing-impaired. Our method involves processing the speech audio signal between a microphone and a loudspeaker that radiates the speech into the room. As there is a strong correlation between the modulation spectrum and the intelligibility of speech, we filtered the speech in the modulation frequency domain. Using several modulation filters, we conducted perceptual experiments with hearing-impaired subjects and asked their preference in a church. The experiments indicate that enhancing the modulation frequencies between 2 and 8 Hz improves intelligibility in reverberant environments. The four hearingimpaired subjects rated the processed speech easier to hear than the unprocessed speech. 1

Year: 2008
OAI identifier: oai:CiteSeerX.psu:10.1.1.133.9342
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://citeseerx.ist.psu.edu/v... (external link)
  • http://www.icsi.berkeley.edu/~... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.