Results using the OPAL strategy in Mandarin speaking cochlear implant recipients.
Int J Audiol
; 56(sup2): S74-S85, 2017.
Article
em En
| MEDLINE
| ID: mdl-27329178
ABSTRACT
OBJECTIVE:
To evaluate the effectiveness of an experimental pitch-coding strategy for improving recognition of Mandarin lexical tone in cochlear implant (CI) recipients.DESIGN:
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 (11) 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. STUDY SAMPLE Five Mandarin speaking users of Nucleus® cochlear implants.RESULTS:
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.CONCLUSIONS:
OPAL can provide benefits to Mandarin lexical tone recognition in moderately noisy conditions and preserve perception of Mandarin sentences in challenging noise conditions.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Percepção da Altura Sonora
/
Acústica da Fala
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Percepção da Fala
/
Fonética
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Implantes Cocleares
/
Pessoas com Deficiência Auditiva
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Implante Coclear
Limite:
Adolescent
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Adult
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Aged
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Female
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Humans
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Male
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Middle aged
País como assunto:
Asia
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article