Effect of frequency boundary assignment on speech recognition with the Nucleus 24 ACE speech coding strategy.
The choice of frequency boundaries for the analysis channels of cochlear implants has been shown to impact the speech perception performance of adult recipients (Skinner et al, 1995; Fourakis et al, 2004). While technological limitations heretofore have limited the clinical feasibility of investigat...
| Publicado en: | Journal of the American Academy of Audiology Vol. 18; no. 8; pp. 700 - 718 |
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| Autores principales: | , , , , |
| Formato: | research Journal Article |
| Publicado: |
Thieme Medical Publishing Inc.
Sep2007
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105894465&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105894465 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10500545 9OC jtl: Journal of the American Academy of Audiology issn: 10500545 maglogo: Y pubinfo: dt: Sep2007 vid: 18 iid: 8 pid: 2811 pub: Thieme Medical Publishing Inc. place: New York, New York artinfo: ui: 105894465 105894465 30022812 2009818600 10.3766/jaaa.18.8.7 NLM18326156 105894465 ppf: 700 ppct: 18 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Effect of frequency boundary assignment on speech recognition with the Nucleus 24 ACE speech coding strategy. aug: au: Fourakis MS Hawks JW Holden LK Skinner MW Holden TA affil: Department of Communicative Disorders, University of Wisconsin-Madison, 1975 Willow Drive, Madison, WI 53706; fourakis@wisc.edu sug: subj: Cochlear Implant Speech Perception Adult Aged Female Male Middle Age Prosthesis Design Questionnaires Human Adult: 19-44 years Aged: 65+ years Middle Aged: 45-64 years Female Male ab: The choice of frequency boundaries for the analysis channels of cochlear implants has been shown to impact the speech perception performance of adult recipients (Skinner et al, 1995; Fourakis et al, 2004). While technological limitations heretofore have limited the clinical feasibility of investigating novel frequency assignments, the SPEAR3 research processor affords the opportunity to investigate an unlimited number of possibilities. Here, four different assignments are evaluated using a variety of speech stimuli. All participants accommodated to assignment changes, and no one assignment was significantly preferred. The results suggest that better performance can be achieved using a strategy whereby (1) there are at least 7-8 electrodes allocated below 1000 Hz, (2) the majority of remaining electrodes are allocated between 1100-3000 Hz, and (3) the region above 3 kHz is represented by relatively few electrodes (i.e., 1-3). The results suggest that such frequency assignment flexibility should be made clinically available. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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