scholarly journals Factors affecting masking release in cochlear-implant vocoded speech

2009 ◽  
Vol 126 (1) ◽  
pp. 338-346 ◽  
Author(s):  
Ning Li ◽  
Philipos C. Loizou
Keyword(s):  
Cochlear Implant ◽  
Factors Affecting ◽  
Masking Release ◽  
Vocoded Speech

Perceptual Learning of Vocoded Speech With and Without Contralateral Hearing: Implications for Cochlear Implant Rehabilitation

2020 ◽  
pp. 1-10
Author(s):  
Martin Chavant ◽  
Alexis Hervais-Adelman ◽  
Olivier Macherey
Keyword(s):  
Cochlear Implant ◽  
Perceptual Learning ◽  
Speech Signal ◽  
Training Phase ◽  
Monosyllabic Words ◽  
Low Pass ◽  
Contralateral Ear ◽  
Number Of Individuals ◽  
Insight Into ◽  
Vocoded Speech

Purpose An increasing number of individuals with residual or even normal contralateral hearing are being considered for cochlear implantation. It remains unknown whether the presence of contralateral hearing is beneficial or detrimental to their perceptual learning of cochlear implant (CI)–processed speech. The aim of this experiment was to provide a first insight into this question using acoustic simulations of CI processing. Method Sixty normal-hearing listeners took part in an auditory perceptual learning experiment. Each subject was randomly assigned to one of three groups of 20 referred to as NORMAL, LOWPASS, and NOTHING. The experiment consisted of two test phases separated by a training phase. In the test phases, all subjects were tested on recognition of monosyllabic words passed through a six-channel “PSHC” vocoder presented to a single ear. In the training phase, which consisted of listening to a 25-min audio book, all subjects were also presented with the same vocoded speech in one ear but the signal they received in their other ear differed across groups. The NORMAL group was presented with the unprocessed speech signal, the LOWPASS group with a low-pass filtered version of the speech signal, and the NOTHING group with no sound at all. Results The improvement in speech scores following training was significantly smaller for the NORMAL than for the LOWPASS and NOTHING groups. Conclusions This study suggests that the presentation of normal speech in the contralateral ear reduces or slows down perceptual learning of vocoded speech but that an unintelligible low-pass filtered contralateral signal does not have this effect. Potential implications for the rehabilitation of CI patients with partial or full contralateral hearing are discussed.

scholarly journals Speech intelligibility enhancement for Thai-speaking cochlear implant listeners

2019 ◽  
Vol 13 (3) ◽  
pp. 866
Author(s):  
Siriporn Dachasilaruk ◽  
Niphat Jantharamin ◽  
Apichai Rungruang
Keyword(s):  
Cochlear Implant ◽  
Speech Enhancement ◽  
Speech Intelligibility ◽  
English Language ◽  
Single Channel ◽  
Spectral Subtraction ◽  
Monosyllabic Words ◽  
Listening Environments ◽  
Babble Noise ◽  
Vocoded Speech

Cochlear implant (CI) listeners encounter difficulties in communicating with other persons in noisy listening environments. However, most CI research has been carried out using the English language. In this study, single-channel speech enhancement (SE) strategies as a pre-processing approach for the CI system were investigated in terms of Thai speech intelligibility improvement. Two SE algorithms, namely multi-band spectral subtraction (MBSS) and Weiner filter (WF) algorithms, were evaluated. Speech signals consisting of monosyllabic and bisyllabic Thai words were degraded by speech-shaped noise and babble noise at SNR levels of 0, 5, and 10 dB. Then the noisy words were enhanced using SE algorithms. The enhanced words were fed into the CI system to synthesize vocoded speech. The vocoded speech was presented to twenty normal-hearing listeners. The results indicated that speech intelligibility was marginally improved by the MBSS algorithm and significantly improved by the WF algorithm in some conditions. The enhanced bisyllabic words showed a noticeably higher intelligibility improvement than the enhanced monosyllabic words in all conditions, particularly in speech-shaped noise. Such outcomes may be beneficial to Thai-speaking CI listeners.

Factors Affecting Age of Diagnosis and Rehabilitation Intervention in Children Receiving Cochlear Implant

2018 ◽  
Vol 22 (2) ◽  
Author(s):  
Nader Saki ◽  
Hasan Abshirini ◽  
Arash Bayat ◽  
Soheila Nikakhlagh ◽  
Ali Fahimi ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Factors Affecting ◽  
Rehabilitation Intervention ◽  
Age Of Diagnosis

A Deep Denoising Autoencoder Approach to Improving the Intelligibility of Vocoded Speech in Cochlear Implant Simulation

2017 ◽  
Vol 64 (7) ◽  
pp. 1568-1578 ◽  
Author(s):  
Ying-Hui Lai ◽  
Fei Chen ◽  
Syu-Siang Wang ◽  
Xugang Lu ◽  
Yu Tsao ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Denoising Autoencoder ◽  
Vocoded Speech

Spectral masking release with HiRes120 sound processing in cochlear implant users

2008 ◽  
Vol 123 (5) ◽  
pp. 3863-3863
Author(s):  
Julie Bestel ◽  
Olivier Sterkers ◽  
Bruno Frachet ◽  
Bernard Meyer ◽  
Eric Truy ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Sound Processing ◽  
Masking Release ◽  
Spectral Masking

Recognition of vocal emotion in noise-vocoded speech by normal hearing and cochlear implant listeners

2016 ◽  
Vol 140 (4) ◽  
pp. 3271-3271 ◽  
Author(s):  
Zhi Zhu ◽  
Ryota Miyauchi ◽  
Yukiko Araki ◽  
Masashi Unoki
Keyword(s):  
Cochlear Implant ◽  
Normal Hearing ◽  
Vocal Emotion ◽  
Vocoded Speech
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