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The effect of a coding strategy that removes temporally masked pulses on speech perception by cochlear implant users. ...
Lamping, Wiebke; Goehring, Tobias; Marozeau, Jeremy; Carlyon, Bob. - : Apollo - University of Cambridge Repository, 2020
Abstract: Speech recognition in noisy environments remains a challenge for cochlear implant (CI) recipients. Unwanted charge interactions between current pulses, both within and between electrode channels, are likely to impair performance. Here we investigate the effect of reducing the number of current pulses on speech perception. This was achieved by implementing a psychoacoustic temporal-masking model where current pulses in each channel were passed through a temporal integrator to identify and remove pulses that were less likely to be perceived by the recipient. The decision criterion of the temporal integrator was varied to control the percentage of pulses removed in each condition. In experiment 1, speech in quiet was processed with a standard Continuous Interleaved Sampling (CIS) strategy and with 25, 50 and 75% of pulses removed. In experiment 2, performance was measured for speech in noise with the CIS reference and with 50 and 75% of pulses removed. Speech intelligibility in quiet revealed no significant ...
Keyword: Acoustic Stimulation; Aged; Aged, 80 and over; Cochlear Implantation; Cochlear Implants; Electric Stimulation; Hearing; Hearing Loss; Humans; Loudness Perception; Male; Middle Aged; Noise; Perceptual Masking; Persons With Hearing Impairments; Speech Intelligibility; Speech Perception
URL: https://dx.doi.org/10.17863/cam.51857
https://www.repository.cam.ac.uk/handle/1810/304775
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2
The effect of a coding strategy that removes temporally masked pulses on speech perception by cochlear implant users.
Lamping, Wiebke; Goehring, Tobias; Marozeau, Jeremy. - : Elsevier BV, 2020. : Hear Res, 2020
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3
Perceptual restoration of masked speech in human cortex.
In: Nature communications, vol 7, iss 1 (2016)
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4
Listening to speech in a background of other talkers: effects of talker number and noise vocoding
In: Journal of the Acoustical Society of America , 133 (4) 2431 - 2443. (2013) (2013)
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5
School-age children's environmental object identification in natural auditory scenes: effects of masking and contextual congruence.
In: Hear Res , 300 46 - 55. (2013) (2013)
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6
Auditory processing deficits in individuals with primary open-angle glaucoma.
In: International journal of audiology, vol 51, iss 1 (2012)
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7
Stream segregation on a single electrode as a function of pulse rate in cochlear implant listeners.
Duran, Sara I.. - 2010
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8
Normal adult aging and the contextual influences affecting speech and meaningful sound perception.
In: Trends Amplif , 14 (4) 218 - 232. (2010) (2010)
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