Results using the OPAL strategy in Mandarin speaking cochlear implant recipients

Autor: Andrew E. Vandali, Komal Arora, Pam W. Dawson
Rok vydání: 2016
Předmět:
Adult
Male
China
Linguistics and Language
medicine.medical_specialty
Adolescent
Speech recognition
medicine.medical_treatment
Coded modulation
Audiology
Mandarin Chinese
Speech Acoustics
Language and Linguistics
Pitch Discrimination
03 medical and health sciences
Speech and Hearing
0302 clinical medicine
Phonetics
Cochlear implant
otorhinolaryngologic diseases
medicine
Humans
Pitch Perception
030223 otorhinolaryngology
Aged
Mathematics
Speech Reception Threshold Test
Age Factors
Tone (linguistics)
Auditory Threshold
Recognition
Psychology
Middle Aged
Cochlear Implantation
Electric Stimulation
language.human_language
Experimental strategy
Noise
Cochlear Implants
Persons With Hearing Impairments
Acoustic Stimulation
QUIET
Speech Perception
language
Female
Perceptual Masking
030217 neurology & neurosurgery
Zdroj: International Journal of Audiology. 56:S74-S85
ISSN: 1708-8186
1499-2027
DOI: 10.1080/14992027.2016.1190872
Popis: To evaluate the effectiveness of an experimental pitch-coding strategy for improving recognition of Mandarin lexical tone in cochlear implant (CI) recipients.Adult CI recipients were tested on recognition of Mandarin tones in quiet and speech-shaped noise at a signal-to-noise ratio of +10 dB; Mandarin sentence speech-reception threshold (SRT) in speech-shaped noise; and pitch discrimination of synthetic complex-harmonic tones in quiet. Two versions of the experimental strategy were examined: (OPAL) linear (1:1) mapping of fundamental frequency (F0) to the coded modulation rate; and (OPAL+) transposed mapping of high F0s to a lower coded rate. Outcomes were compared to results using the clinical ACE™ strategy.Five Mandarin speaking users of Nucleus® cochlear implants.A small but significant benefit in recognition of lexical tones was observed using OPAL compared to ACE in noise, but not in quiet, and not for OPAL+ compared to ACE or OPAL in quiet or noise. Sentence SRTs were significantly better using OPAL+ and comparable using OPAL to those using ACE. No differences in pitch discrimination thresholds were observed across strategies.OPAL can provide benefits to Mandarin lexical tone recognition in moderately noisy conditions and preserve perception of Mandarin sentences in challenging noise conditions.
Databáze: OpenAIRE
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