Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences.

Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences. Research Abstract Details 

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Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences. Abstract Text:

Ginger S Stickney,Peter F Assmann,Janice Chang,Fan-Gang Zeng,

Speech perception in the presence of another competing voice is one of the most challenging tasks for cochlear implant users. Several studies have shown that (1) the fundamental frequency (F0) is a useful cue for segregating competing speech sounds and (2) the F0 is better represented by the temporal fine structure than by the temporal envelope. However, current cochlear implant speech processing algorithms emphasize temporal envelope information and discard the temporal fine structure. In this study, speech recognition was measured as a function of the F0 separation of the target and competing sentence in normal-hearing and cochlear implant listeners. For the normal-hearing listeners, the combined sentences were processed through either a standard implant simulation or a new algorithm which additionally extracts a slowed-down version of the temporal fine structure (called Frequency-Amplitude-Modulation-Encoding). The results showed no benefit of increasing F0 separation for the cochlear implant or simulation groups. In contrast, the new algorithm resulted in gradual improvements with increasing F0 separation, similar to that found with unprocessed sentences. These results emphasize the importance of temporal fine structure for speech perception and demonstrate a potential remedy for difficulty in the perceptual segregation of competing speech sounds.

Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences. Publishing Authors By Initials

GS Stickney,PF Assmann,J Chang,FG Zeng,

For similar circulatory and respiratory physiology: respiratory physiology: respiratory physiologic phenomena: voice research abstracts see: circulatory and respiratory physiology: respiratory physiology: respiratory physiologic phenomena: voice research

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Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of the Acoustical Society of America

VOLUME: 122

Page Numbers: 1069-78

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 1520-8524

DAY: 3

MONTH: Aug

YEAR: 2007

Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences. Information

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LANGUAGE: eng

NlmUniqueID: 7503051

Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences. Keywords Mesh Terms:

KEYWORDS: Voice

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Grant and Affiliation Information for Effects of cochlear implant processing and fundamental frequency on the intelligibility of competing sentences.

AFFILIATION: Hearing Instrument Consultants, Costa Mesa, California 92626, USA. gsstickney@yahoo.com

Country: United States

AGENCY: United States NIDCD

GRANT: F32 DC05900

ACRONYM: DC

MEDLINETA: J Acoust Soc Am

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