Enhancing Chinese Speech Recognition for Cochlear Implant Users by Using Hearing Aid in the Contralateral Ear
Xin Luo · Beijing shengwu yixue gongcheng · 2005
Objective The present study investigated Chinese speech recognition in speech-shaped noise using an acoustic simulation of a cochlear implant(CI) in conjunction with a hearing aid(HA).Method Speech recognition thresholds(SRT) of Chinese sentence recognition in speech-shaped noise were measured for 6 normal hearing Chinese-speaking subjects using a 1-up/1-down adaptive procedure.Result The data curve of the SRT versus the low-pass cutoff frequency in the HA simulation showed a shape similar to that of a low-pass filter.Conclusion As long as the residual acoustic hearing covers the pitch range of the speaker, low frequency information restored by HA can greatly assist CI users in Chinese speech recognition in speech-shaped noise, no matter their frequecy ranges overlap or not.