title: Factors that allow a high level of speech understanding by patients fit with cochlear implants.
abstract: Three factors account for the high level of speech understanding in quiet enjoyed by many patients fit with cochlear implants. First, some information about speech exists in the time/amplitude envelope of speech. This information is sufficient to narrow the number of word candidates for a given signal. Second, if information from the envelope of speech is available to listeners, then only minimal information from the frequency domain is necessary for high levels of speech recognition in quiet. Third, perceiving strategies for speech are inherently flexible in terms of the mapping between signal frequencies (i.e., the locations of the formants) and phonetic identity.
authors.affiliation: Department of Speech and Hearing Science, Arizona State University, Tempe 85287-0102, USA. mdorman@asu.edu
authors.forename: Michael F
authors.initials: MF
authors.lastname: Dorman
authors.forename: Philipos C
authors.initials: PC
authors.lastname: Loizou
authors.forename: Anthony J
authors.initials: AJ
authors.lastname: Spahr
authors.forename: Erin
authors.initials: E
authors.lastname: Maloff
mesh_terms: D019929:Cochlear Implantation; D003071:Cognition; D003638:Deafness / Q000601:surgery*; D006801:Humans; D017755:Prosthesis Fitting; D013018:Sound Spectrography; D013067:Speech Perception; D013997:Time Factors