scholarly journals Analysis of Speech Processing Strategies in Cochlear Implants

2008 ◽  
Vol 4 (5) ◽  
pp. 372-374 ◽  
Author(s):  
Kouachi Rouiha ◽  
Djedou Bachir ◽  
Bouchaala Ali
Keyword(s):  
Cochlear Implants ◽  
Speech Processing ◽  
Processing Strategies

An Introduction to Cochlear Implant Technology, Activation, and Programming

2002 ◽  
Vol 33 (3) ◽  
pp. 153-161 ◽  
Author(s):  
Jan A. Moore ◽  
Holly F. B. Teagle
Keyword(s):  
Hearing Loss ◽  
Cochlear Implant ◽  
Cochlear Implants ◽  
Speech Processing ◽  
Academic Development ◽  
School Age Children ◽  
School Age ◽  
Technology In The Classroom ◽  
Processing Strategies ◽  
Cochlear Implant Surgery

Over the last decade, cochlear implantation has become an increasingly viable alternative for the treatment of profound sensorineural hearing loss in children. Although speech and hearing professionals play an important role in the communicative, social, and academic development of children with cochlear implants, many may be unfamiliar with recent advances in implant technology. This article provides an overview of the components of cochlear implant systems and the speech processing strategies that are currently being used by toddlers, preschoolers, and school-age children. A brief description of cochlear implant surgery and the procedures for programming these devices are also included. Finally, information regarding the use of assistive listening technology in the classroom is presented.

scholarly journals COMPARATIVE STUDIES OF SPEECH PROCESSING STRATEGIES FOR COCHLEAR IMPLANTS

1988 ◽  
Vol 98 (10) ◽  
pp. 1069???1077 ◽  
Author(s):  
C. C. FINLEY ◽  
B. A. WEBER ◽  
M. W. WHITE ◽  
B. S. WILSON ◽  
J. C. FARMER ◽  
...  
Keyword(s):  
Cochlear Implants ◽  
Speech Processing ◽  
Comparative Studies ◽  
Processing Strategies

scholarly journals When Hearing Is Tricky: Speech Processing Strategies in Prelingually Deafened Children and Adolescents with Cochlear Implants Having Good and Poor Speech Performance

PLoS ONE ◽  
2017 ◽  
Vol 12 (1) ◽  
pp. e0168655 ◽  
Author(s):  
Magdalene Ortmann ◽  
Pienie Zwitserlood ◽  
Arne Knief ◽  
Johanna Baare ◽  
Stephanie Brinkheetker ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Cochlear Implants ◽  
Speech Processing ◽  
Processing Strategies ◽  
Speech Performance

Channel interaction and speech processing strategies for cochlear implants

2000 ◽  
Vol 108 (5) ◽  
pp. 2601-2601 ◽  
Author(s):  
Ginger S. Stickney ◽  
Philip Loizou ◽  
Lakshmi Narayan Mishra ◽  
Peter F. Assmann ◽  
Robert V. Shannon ◽  
...  
Keyword(s):  
Cochlear Implants ◽  
Speech Processing ◽  
Channel Interaction ◽  
Processing Strategies

scholarly journals Place pitch discrimination and speech recognition in cochlear implants users

1996 ◽  
Vol 43 (1) ◽  
Author(s):  
Johan J. Hanekom ◽  
Robert V. Shannon
Keyword(s):  
Speech Perception ◽  
Cochlear Implants ◽  
Speech Processing ◽  
Patient Specific ◽  
Pitch Discrimination ◽  
Discrimination Ability ◽  
Processing Strategies ◽  
Place Pitch ◽  
Pitch Distance ◽  
The Relationship

The considerable variability in speech perception performance among cochlear implant patients makes it difficult to compare the effectiveness of different speech processing strategies. One result is that optimal individualized processor parameter setting is not always achieved. This paper investigates the relationship between place pitch discrimination ability and speech perception to establish whether pitch ranking could be used as an aid in better patient-specific fitting of processors. Three subjects participated in this study. Place pitch discrimination ability was measured and this information was used to design new channel to electrode allocations for each subject. Several allocations were evaluated with speech tests with consonant, vowel and sentence material. It is shown that there is correlation between the perceptual pitch distance between electrodes and speech perception performance. The results indicate that pitch ranking ability might be used both as an indicator of  the speech perception potential of an implant user and in the choice of better electrode configurations.

Signal Coding in Cochlear Implants: Exploiting Stochastic Effects of Electrical Stimulation

2003 ◽  
Vol 112 (9_suppl) ◽  
pp. 14-19 ◽  
Author(s):  
Jay T. Rubinstein ◽  
Robert Hong
Keyword(s):  
Electrical Stimulation ◽  
Speech Perception ◽  
Cochlear Implants ◽  
Speech Processing ◽  
Music Perception ◽  
Dynamic Range ◽  
High Rate ◽  
Monosyllabic Word ◽  
Stochastic Effects ◽  
Processing Strategies

Speech perception in quiet with cochlear implants has increased substantially over the past 17 years. If current trends continue, average monosyllabic word scores will be nearly 80% by 2010. These improvements are due to enhancements in speech processing strategies, to the implantation of patients with more residual hearing and shorter durations of deafness, and to unknown causes. Despite these improvements, speech perception in noise and music perception are still poor in most implant patients. These deficits may be partly due to poor representation of temporal fine structure by current speech processing strategies. It may be possible to improve both this representation and the dynamic range of electrical stimulation through the exploitation of stochastic effects produced by high-rate (eg, 5-kilopulse-per-second) pulse trains. Both the loudness growth and the dynamic range of low-frequency sinusoids have been enhanced via this technique. A laboratory speech processor using this strategy is under development. Although the clinical programming for such an algorithm is likely to be complex, some guidelines for the psychophysical and electrophysiological techniques necessary can be described now.

Speech Processing for Multichannel Cochlear Implants: Variations of the Spectral Maxima Sound Processor Strategy

1994 ◽  
Vol 114 (1) ◽  
pp. 52-58 ◽  
Author(s):  
Colette M. McKay ◽  
Andrew E. Vandali ◽  
Hugh J. McDermott ◽  
Graeme M. Clark
Keyword(s):  
Cochlear Implants ◽  
Speech Processing ◽  
Sound Processor

scholarly journals Modulation depth discrimination by cochlear implant users

2021 ◽  
Author(s):  
Jessica Monaghan ◽  
Robert P. Carlyon ◽  
John M. Deeks
Keyword(s):  
Speech Processing ◽  
Dynamic Range ◽  
Modulation Depth ◽  
High Rate ◽  
Backward Masking ◽  
Pulse Trains ◽  
Processing Strategies ◽  
Depth Discrimination ◽  
Variable Point ◽  
Forced Choice Task

Cochlear implants (CIs) convey the amplitude envelope of speech by modulating high-rate pulse-trains. However, not all of the envelope may be necessary to perceive amplitude modulations (AM); the effective envelope depth may be limited by forward and backward masking from the envelope peaks. Three experiments used modulated pulse-trains to measure which portions of the envelope can be effectively processed by CI users as a function of AM frequency. Experiment 1 used a three-interval forced-choice task to test the ability of CI users to discriminate less-modulated pulse trains from a fully-modulated standard, without controlling for loudness. The stimuli in Experiment 2 were identical, but a two-interval task was used in which participants were required to choose the less-modulated interval, ignoring loudness. Catch trials, in which judgements based on level or modulation depth would give opposing answers were included. Experiment 3 employed novel stimuli whose modulation envelope could be modified below a variable point in the dynamic range, without changing the loudness of the stimulus. Overall, results showed that substantial portions of the envelope are not accurately encoded by CI users. Experiment 1, where loudness cues were available, participants on average were insensitive to changes in the bottom 30% of their dynamic range. In Experiment 2, where loudness was controlled, participants appeared insensitive to changes in the bottom 50% of the dynamic range. In Experiment 3, participants were insensitive to changes in the bottom 80% of the dynamic range. We discuss potential reasons for this insensitivity and implications for CI speech-processing strategies.

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