A Psychoacoustic "NofM"-type Speech Coding Strategy for Cochlear Implants
Nogueira W, Büchner A, Lenarz T, Edler B (2005)
Publication Type: Journal article
Publication year: 2005
Journal
Publisher: Hindawi Publishing Corporation
Edited Volumes: Special Issue on DSP in Hearing Aids and Cochlear Implants Eurasip
City/Town: New York, NY, United States
Book Volume: 127
Pages Range: 3044-3059
Edition: 18
Abstract
We describe a new signal processing technique for cochlear implants using a psychoacoustic-masking model. The technique is based on the principle of a so-called "NofM" strategy. These strategies stimulate fewer channels (N) per cycle than active electrodes (NofM; N < M). In "NofM" strategies such as ACE or SPEAK, only the N channels with higher amplitudes are stimulated. The new strategy is based on the ACE strategy but uses a psychoacoustic-masking model in order to determine the essential components of any given audio signal. This new strategy was tested on device users in an acute study, with either 4 or 8 channels stimulated per cycle. For the first condition (4 channels), the mean improvement over the ACE strategy was 17%. For the second condition (8 channels), no significant difference was found between the two strategies.
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Germany (DE)How to cite
APA:
Nogueira, W., Büchner, A., Lenarz, T., & Edler, B. (2005). A Psychoacoustic "NofM"-type Speech Coding Strategy for Cochlear Implants. EURASIP J APPL SIG P, 127, 3044-3059. https://doi.org/10.1155/ASP.2005.3044
MLA:
Nogueira, Waldo, et al. "A Psychoacoustic "NofM"-type Speech Coding Strategy for Cochlear Implants." EURASIP J APPL SIG P 127 (2005): 3044-3059.
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