对侧耳正常听力的人工耳蜗植入受试者中，存在竞争声源时，双模式听力对言语识别有获益。
Bimodal hearing benefit for speech recognition with competing voice in cochlear implant subject with normal hearing in contralateral ear.
机构信息
South of England Cochlear Implant Centre, Institute of Sound and Vibration Research, University of Southampton, SO17 1BJ, United Kingdom.
出版信息
Ear Hear. 2010 Feb;31(1):70-3. doi: 10.1097/AUD.0b013e3181bc7722.
Abstract
OBJECTIVES
This project assessed electroacoustic benefit for speech recognition with a competing talker.
DESIGN
Using a cochlear implant subject with normal hearing in the contralateral ear, the contribution of low-pass and high-pass natural sound to speech recognition was systematically measured.
RESULTS
High-frequency sound did not improve performance, but low-frequency sound did, even when unintelligible and limited to frequencies below 150 Hz.
CONCLUSIONS
The low-frequency sound assists separation of the two talkers, presumably using the fundamental frequency cue. Extrapolating this finding to regular cochlear implant users may suggest that using a hearing aid on the contralateral ear will improve performance, even with limited residual hearing.
摘要
目的
本项目评估了在有干扰者的情况下，电声学对言语识别的益处。
设计
利用对侧耳正常听力的人工耳蜗植入受试者，系统地测量了低通和高通自然声对言语识别的贡献。
结果
高频声音不能提高性能，但低频声音可以，即使声音不可理解且限于 150Hz 以下。
结论
低频声音有助于两个说话者的分离，可能是利用了基频线索。将这一发现推断到普通人工耳蜗使用者身上，可能表明即使残余听力有限，使用对侧耳的助听器也会提高性能。
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