Results using the OPAL strategy in Mandarin speaking cochlear implant recipients

Vandali, Andrew E.; Dawson, Pam W.; Arora, Komal

doi:10.1080/14992027.2016.1190872

Cited by 15 publications

(18 citation statements)

References 37 publications

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“…A similar improvement was also found by Vandali and van Hosel for the experimental algorithm named enhanced‐envelope‐encoder (eTone) over the conventional ACE coding strategy. In a later study, Vandali et al compared the eTone, named “optimized pitch and language (OPAL),” with the ACE strategy. Their comparison demonstrated that the experimental OPAL strategy can improve tone perception in noise.…”

Section: Discussionmentioning

confidence: 99%

“…Most sound‐processing strategies have been designed based on the languages of Europe and the United States, which differ from tonal languages, that is, Sino‐Tibetan, including Mandarin and Cantonese. Tonal language is widely used among people worldwide, with an estimated 1.3 billion people speaking tonal languages in the Asia‐Pacific region . In tonal languages, tone variations within the same phonemic segment produce a change in lexical meaning.…”

Section: Introductionmentioning

confidence: 99%

“…The primary cue is F0 height and contour, while the secondary cue is supersegmental information (such as duration and amplitude) and the spectral envelope. The latter cue is especially important when F0 information is degraded, for example, in noise or other competition conditions …”

Section: Introductionmentioning

confidence: 99%

“…Tonal language is widely used among people worldwide, with an estimated 1.3 billion people speaking tonal languages in the Asia-Pacific region. 14 In tonal languages, tone variations within the same phonemic segment produce a change in lexical meaning. Furthermore, tones are heavily loaded with semantic and grammatical information.…”

Section: Introductionmentioning

confidence: 99%

“…The latter cue is especially important when F0 information is degraded, for example, in noise or other competition conditions. 10,14,15 As mentioned previously, the design of the CI sound-processing strategy was mostly based on non-tonal language. The strategy typically provided very limited F0 information via temporal envelopes delivered to stimulating electrodes.…”

Section: Introductionmentioning

confidence: 99%

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The effectiveness of sound‐processing strategies on tonal language cochlear implant users: A systematic review

Liu

Peng

Zhao

et al. 2017

Pediatric Investigation

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Importance: Contemporary cochlear implants (CIs) are well established as a technology for people with severe-to-profound sensorineural hearing loss, with their effectiveness having been widely reported. However, for tonal language CI recipients, speech perception remains a challenge: Conventional signal processing strategies have been demonstrated to possibly provide insufficient information to encode tonal cues, and CI recipients have exhibited considerable deficits in tone perception.Thus, some tonal language-oriented sound-processing strategies have been introduced. The effects of available tonal language-oriented strategies on tone perception are reviewed and evaluated in this study. The results may aid in designing and improving tonal language-appropriate sound-processing strategies for CI recipients.Objective: The objective of this systematic review was to investigate the effects of tonal-language-oriented signal processing strategies on tone perception, music perception, word and sentence recognition. Methods:To evaluate the effects of tonal language-oriented strategies on tone perception, we conducted a systematic review. We searched for relevant reports dated from January 1979 to July 2017 using PubMed, Cochrane Library, EBSCO, Web of Science, EMBASE, and 4 Chinese periodical databases (CBMdisc, CNKI, VIP, and Wanfang Data).Results: According to our search strategy, 672 potentially eligible studies were retrieved from the databases, with 12 of these studies included in the final review after a 4-stage selection process. The majority of sound-processing strategies designed for tonal language were HiResolution â with Fidelity 120 (HiRes 120), fine structure processing, temporal fine structure (TFS), and C-tone. Generally, acute or short-term comparisons between the tonal language-oriented strategies and the conventional strategy did not reveal statistically significant differences in speech perception (or show a small improvement). However, a tendency toward improved tone perception and subjectively reported overall preferred sound quality was observed with the tonal language-oriented strategies.Interpretation: Conventional signal processing strategies typically provided very limited F0 information via temporal envelopes delivered to the stimulating electrodes.In contrast, tonal language-oriented coding strategies attempted to present more These reports have shown that CI provides a fairly high level of speech perception in the majority of users, especially in quiet conditions. However, other reports have indicated that CI recipients exhibit considerable deficits in tone perception of native tonal language speakers, especially among prelingually deafened tonal language children. 4-13Sound-processing strategies are the core of CI technology, temporary cues that can be delivered by the CIS. 16 Because these features are critical for speech perception, the CIS is a standard and widely used coding strategy in CIs. However, the CIS delivers only little fine structure information and presents only envel...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The effectiveness of sound‐processing strategies on tonal language cochlear implant users: A systematic review

Liu

Peng

Zhao

et al. 2017

Pediatric Investigation

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Factors Affecting Speech Reception in Background Noise with a Vocoder Implementation of the FAST Algorithm

Hossain

Goldsworthy

2018

JARO

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Speech segregation in background noise remains a difficult task for individuals with hearing loss. Several signal processing strategies have been developed to improve the efficacy of hearing assistive technologies in complex listening environments. The present study measured speech reception thresholds in normal-hearing listeners attending to a vocoder based on the Fundamental Asynchronous Stimulus Timing algorithm (FAST: Smith et al. 2014), which triggers pulses based on the amplitudes of channel magnitudes in order to preserve envelope timing cues, with two different reconstruction bandwidths (narrowband and broadband) to control the degree of spectrotemporal resolution. Five types of background noise were used including same male talker, female talker, time-reversed male talker, time-reversed female talker, and speech-shaped noise to probe the contributions of different types of speech segregation cues and to elucidate how degradation affects speech reception across these conditions. Maskers were spatialized using head-related transfer functions in order to create co-located and spatially separated conditions. Results indicate that benefits arising from voicing and spatial cues can be preserved using the FAST algorithm but are reduced with a reduction in spectral resolution.

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Stimulation Rate and Voice Pitch Perception in Cochlear Implants

Kovačić

James

2022

JARO

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Results using the OPAL strategy in Mandarin speaking cochlear implant recipients

Abstract: OPAL can provide benefits to Mandarin lexical tone recognition in moderately noisy conditions and preserve perception of Mandarin sentences in challenging noise conditions.

Cited by 15 publications

References 37 publications

The effectiveness of sound‐processing strategies on tonal language cochlear implant users: A systematic review

The effectiveness of sound‐processing strategies on tonal language cochlear implant users: A systematic review

Factors Affecting Speech Reception in Background Noise with a Vocoder Implementation of the FAST Algorithm

Stimulation Rate and Voice Pitch Perception in Cochlear Implants

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