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Environmental sound recognition with cochlear implants
Author(s): ZHANG Xiaowei, MENG Qinglin, TANG Guofang, ZHENG Nengheng, LI Xia, College of Information Engineering, Shenzhen University, Shenzhen Key Laboratory of Communication and Information Processing, Zhejiang Nurotron Biotechnology Co., Ltd.
Pages: 891-
896
Year: 2016
Issue:
6
Journal: Acta Acustica
Keyword: 环境声; 人工耳蜗; 识别实验; 声码器; 植入者; 声学特征; 力者; 语音识别; 随机顺序; 康复手段;
Abstract: The effects of the sinewave-band vocoder and noise-band vocoder on predicting the cochlear implant(CI)environment sound(ES) perception performance were compared through vocoder simulation experiments on 14 normal hearing(NH) listeners.Then,9 Mandarin-speaking CI users were also tested on ES perception.The sound materials were collected from the internet.Only the sounds,which were perfectly recognized by 12 NH listeners in a pre-test procedure,were used in the formal experiments.Results showed that:(1) the carrier type has no significant effects on the average recognition rates of the 67 vocoded ESs;(2) the carrier type may have some effects on the recognition of single vocoded ES depending on the acoustic characteristics of the original sound;(3) the 9 CI users showed poorer performance than NH.More works on signal processing strategy,neural interface,and rehabilitation methods should be done to close this gap.The materials in this study can be used in future CI-ES studies.
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