NDLI: A novel acoustic simulation of cochlear implant hearing: effects of temporal fine structure

Content Provider	IEEE Xplore Digital Library
Author	Rubinstein, J.T. Turner, C.
Copyright Year	2003
Description	Author affiliation: Departments of Otolaryngology, Iowa Univ., Iowa City, IA, USA (Rubinstein, J.T.; Turner, C.)
Abstract	Acoustic simulations of cochlear implant signal processing have been widely used to determine the upper bounds on speech perception using these devices. These simulations assume that the only temporal information delivered to the inner ear is the envelope of the signal and that spectral cues, determined by the number of channels present, are the primary determinant of speech perception ability. While highly informative, such simulations fail to explain open-set speech perception obtained by some patients who received single channel implants as young children. In addition, some implant recipients enjoy and appreciate music to an extent not possible if envelope is the sole source of temporal information. A novel acoustic simulation algorithm is described which allows varying the degree to which temporal fine structure is delivered to the cochlea. Use of this algorithm demonstrates that while high levels of speech perception in quiet can be provided with only six channels of envelope, inclusion of even small amounts of temporal fine structure dramatically improves perception of speech in noise, timbre and melody.
Starting Page	142
Ending Page	145
File Size	446136
Page Count	4
File Format	PDF
ISBN	0780375793
DOI	10.1109/CNE.2003.1196777
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-20
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cochlear implants Pediatrics Acoustic devices Upper bound Signal processing algorithms Auditory system Ear Speech enhancement Acoustic signal processing Speech processing
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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