Perception of Mandarin Chinese with cochlear implants using enhanced temporal pitch cues

Milczynski, Matthias; Chang, Jei Wen; Wouters, Jan; Wieringen, Astrid Van

doi:10.1016/j.heares.2012.02.006

Cited by 37 publications

(50 citation statements)

References 43 publications

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“…These findings are consistent with those of a related study examining Mandarin lexical tone recognition using the experimental F0mod strategy compared to ACE (Milczynski et al, 2012). The experimental strategy in this previous study also showed a significant benefit for tone recognition in stationary noise and no benefit in quiet.…”

Section: Lexical Tone Discriminationsupporting

confidence: 91%

“…The second approach applies to strategies that explicitly amplitude-modulate the envelope of signals in each channel of CIS or ACE at a rate equal to F0. These strategies include: sinusoidal or sawtooth modulation of CIS (Green et al, 2004(Green et al, , 2005, F0Sync , F0mod (Laneau, 2005;Laneau et al, 2006;Milczynski et al, 2009Milczynski et al, , 2012, and enhanced-envelope-encoded tone (eTone) (Vandali andvan Hoesel, 2011, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…More recently, Milczynski et al (2012) examined Mandarin word, tone, and sentence recognition in quiet and speech-shaped noise using F0mod and ACE in a group of four Mandarin speaking adult CI recipients. Outcomes demonstrated a modest improvement in lexical tone recognition using F0mod for Mandarin words in noise spoken by a male speaker at SNRs of +10, +5, and 0 dB.…”

Section: Introductionmentioning

confidence: 99%

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Results using the OPAL strategy in Mandarin speaking cochlear implant recipients

Vandali

Dawson

Arora

2016

International Journal of Audiology

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Section: Lexical Tone Discriminationsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Results using the OPAL strategy in Mandarin speaking cochlear implant recipients

Vandali

Dawson

Arora

2016

International Journal of Audiology

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“…Furthermore, the effect of enhancing modulations on speech perception and sound quality needs to be investigated. In studies with pitchenhancement algorithms that manipulate the electrical signal in a similar way as MEnS, no adverse effects on speech perception were found (Laneau et al 2006;Milczynski et al 2009Milczynski et al , 2012Vandali et al 2005). …”

Section: Discussionmentioning

confidence: 98%

“…MEnS enhances two main features: the shape of the envelope of the electric signal and the temporal accuracy of the onset and the modulations. Its concept is related to that of existing strategies that are designed to improve pitch perception, such as sawtooth modulation (Green et al 2004), F0Sync (Vandali et al 2005, frequency modulation (F0mod) (Laneau et al 2006;Milczynski et al 2012;, MEM (Vandali et al 2005), and eTone (Vandali and van Hoesel 2011). The fundamental frequency modulation (F0mod) sound processing strategy was developed to improve pitch perception with cochlear implants.…”

Section: Introductionmentioning

confidence: 99%

Modulation Enhancement in the Electrical Signal Improves Perception of Interaural Time Differences with Bimodal Stimulation

Francart

Lenssen

Wouters

2014

JARO

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Interaural timing cues are important for sound source localization and for binaural unmasking of speech that is spatially separated from interfering sounds. Users of a cochlear implant (CI) with residual hearing in the non-implanted ear (bimodal listeners) can only make very limited use of interaural timing cues with their clinical devices. Previous studies showed that bimodal listeners can be sensitive to interaural time differences (ITDs) for simple single-and three-channel stimuli. The modulation enhancement strategy (MEnS) was developed to improve the ITD perception of bimodal listeners. It enhances temporal modulations on all stimulated electrodes, synchronously with modulations in the acoustic signal presented to the non-implanted ear, based on measurement of the amplitude peaks occurring at the rate of the fundamental frequency in voiced phonemes. In the first experiment, ITD detection thresholds were measured using the method of constant stimuli for five bimodal listeners for an artificial vowel, processed with either the advanced combination encoder (ACE) strategy or with MEnS. With MEnS, detection thresholds were significantly lower, and for four subjects well within the physically relevant range. In the second experiment, the extent of lateralization was measured in three subjects with both strategies, and ITD sensitivity was determined using an adaptive procedure. All subjects could lateralize sounds based on ITD and sensitivity was significantly better with MEnS than with ACE. The current results indicate that ITD cues can be provided to bimodal listeners with modified sound processing.

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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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Perception of Mandarin Chinese with cochlear implants using enhanced temporal pitch cues

Cited by 37 publications

References 43 publications

Results using the OPAL strategy in Mandarin speaking cochlear implant recipients

Results using the OPAL strategy in Mandarin speaking cochlear implant recipients

Modulation Enhancement in the Electrical Signal Improves Perception of Interaural Time Differences with Bimodal Stimulation

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

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