Biomaterial Database

Synthetic two-formant vowel perception by some of the better cochlear-implant patients. 1989

R S Tyler, and N Tye-Murray, and B C Moore, and B F McCabe

Department of Otolaryngology, Head and Neck Surgery, University of Iowa, Iowa City.

Synthetic two-formant vowel recognition was tested in some of the better cochlear-implant users to determine their ability to resolve sounds that differ essentially in their frequency content. The vowels /i, epsilon, alpha, u/ were synthesized with equal duration and similar sound pressure level. The formant values were chosen to approximate the values of these vowels in French, German and American English. Performance ranged from 29 to 71% for the 6 patients with the Chorimac implant, from 25 to 67% for the 9 patients with the 3M/Vienna implant, from 63 to 92% for the 10 patients with the Nucleus implant from Hannover, from 17 to 79% for the 10 patients with the Duren/Cologne implant, from 54 to 100% for the 9 patients with the Symbion implant, and from 79 to 100% for the 10 Nucleus patients from the USA. Patients with each of these devices can utilize some spectral information when recognizing steady-state vowels.

UI	MeSH Term	Description	Entries
D007802	Language	A verbal or nonverbal means of communicating ideas or feelings.	Dialect,Dialects,Languages
D010700	Phonetics	The science or study of speech sounds and their production, transmission, and reception, and their analysis, classification, and transcription. (Random House Unabridged Dictionary, 2d ed)	Speech Sounds,Sound, Speech,Sounds, Speech,Speech Sound
D003054	Cochlear Implants	Electronic hearing devices typically used for patients with normal outer and middle ear function, but defective inner ear function. In the COCHLEA, the hair cells (HAIR CELLS, VESTIBULAR) may be absent or damaged but there are residual nerve fibers. The device electrically stimulates the COCHLEAR NERVE to create sound sensation.	Auditory Prosthesis,Cochlear Prosthesis,Implants, Cochlear,Auditory Prostheses,Cochlear Implant,Cochlear Prostheses,Implant, Cochlear,Prostheses, Auditory,Prostheses, Cochlear,Prosthesis, Auditory,Prosthesis, Cochlear
D003143	Communication Aids for Disabled	Equipment that provides mentally or physically disabled persons with a means of communication. The aids include display boards, typewriters, cathode ray tubes, computers, and speech synthesizers. The output of such aids includes written words, artificial speech, language signs, Morse code, and pictures.	Augmentative and Alternative Communications Systems,Communication Aids for Handicapped,Communication Boards,Speech Synthesizers,Telecommunications Devices for the Deaf,TDD,TTY Telephone,Text Telecommunication,Text Telecommunication Devices,Text Telephone,Communication Board,Speech Synthesizer,Synthesizer, Speech,Synthesizers, Speech,TTY Telephones,Telecommunication Device, Text,Telecommunication Devices, Text,Telecommunication, Text,Telecommunications, Text,Text Telecommunication Device,Text Telecommunications,Text Telephones
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013018	Sound Spectrography	The graphic registration of the frequency and intensity of sounds, such as speech, infant crying, and animal vocalizations.	Sonography, Speech,Sonography, Sound,Speech Sonography,Sonographies, Sound,Sound Sonographies,Sound Sonography,Spectrography, Sound
D013067	Speech Perception	The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes).	Speech Discrimination,Discrimination, Speech,Perception, Speech