Division of Speech and Hearing Sciences, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Hong Kong.
J Acoust Soc Am. 2012 Aug;132(2):EL142-8. doi: 10.1121/1.4737595.
This study assessed the effects of binaural spectral resolution mismatch on the intelligibility of Mandarin speech in noise using bilateral cochlear implant simulations. Noise-vocoded Mandarin speech, corrupted by speech-shaped noise at 0 and 5 dB signal-to-noise ratios, were presented unilaterally or bilaterally to normal-hearing listeners with mismatched spectral resolution between ears. Significant binaural benefits for Mandarin speech recognition were observed only with matched spectral resolution between ears. In addition, the performance of tone identification was more robust to noise than that of sentence recognition, suggesting factors other than tone identification might account more for the degraded sentence recognition in noise.
本研究使用双侧人工耳蜗模拟评估了双耳频谱分辨率失配对噪声中普通话语音可懂度的影响。言语噪声调制的普通话语音在 0 和 5 dB 信噪比下受到语音噪声的污染，分别以单侧或双侧方式呈现给双耳频谱分辨率不匹配的正常听力听众。只有在双耳频谱分辨率匹配的情况下，才能观察到普通话语音识别的显著双耳益处。此外，与句子识别相比，声调识别对噪声的鲁棒性更强，这表明可能有其他因素比声调识别更能解释噪声中句子识别的下降。
