Cochlear Implants

Zeng, Fan‐Gang; Rebscher, Stephen J.; Harrison, William V.; Sun, Xiao; Feng, Huihui

doi:10.1007/978-0-387-77261-5_3

Cited by 3 publications

(2 citation statements)

References 134 publications

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“…However, it has been reported that CI users who speak Chinese have poor identification of vowels and consonants [5,6] . Chinese is a tonal language, which has 4 tonal patterns as defined by the fundamental frequency (F0) of voiced speech.…”

Section: Introductionmentioning

confidence: 99%

“…To experimentally evaluate the efficacy of the SPLS strategy in processing Mandarin Chinese speech, we presented the acoustic stimulation of the SPLS strategy to normal-hearing Chinese listeners under either noise-masking or competing-speech-masking conditions. Figure 1 illustrates how the SPLS strategy extracts envelopes of band-pass filtered signals and uses phase information to modulate pulse rates [1,6] . A signal is pre-emphasized first and then decomposed into multiple frequency bands by a bank of bandpass filters.…”

Section: Introductionmentioning

confidence: 99%

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Simulated Phase-Locking Stimulation: An Improved Speech Processing Strategy for Cochlear Implants

Chen¹,

Liang

et al. 2009

ORL

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The continuous interleaved sampling (CIS) speech-processing strategy has been widely used for cochlear implants to extract speech envelope information without preserving phase information. In this study, a novel simulated phase-locking stimulation (SPLS) strategy, which detects zero-crossing times of the narrow-band signal of each band, was developed to extract both phase and amplitude-envelope information from a bank of frequency bands of speech sounds. The advantage of the SPLS strategy over the CIS strategy was confirmed by the results of our psychophysical experiments, showing that normal-hearing Chinese listeners’ performance in recognizing SPLS-processed Chinese speech was significantly better than their performance of recognizing CIS-processed Chinese speech under quiet, noise-masking, or speech-masking conditions. Thus, the results suggest that if the SPLS strategy is used to modulate the interval of electrical stimulation pulses in cochlear-implant devices according to extracted phase information, the speech-processing functions of cochlear implant devices would be improved for Chinese cochlear implant users.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%