Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou 215006, China.
Department of Otology and Skull Base Surgery, Eye Ear Nose and Throat Hospital, Fudan University, Shanghai 200031, China.
J Acoust Soc Am. 2021 Jul;150(1):339. doi: 10.1121/10.0005597.
Children with normal hearing (CNH) have greater difficulty segregating competing speech than do adults with normal hearing (ANH). Children with cochlear implants (CCI) have greater difficulty segregating competing speech than do CNH. In the present study, speech reception thresholds (SRTs) in competing speech were measured in Chinese Mandarin-speaking ANH, CNH, and CCIs. Target sentences were produced by a male Mandarin-speaking talker. Maskers were time-forward or -reversed sentences produced by a native Mandarin-speaking male (different from the target) or female or a non-native English-speaking male. The SRTs were lowest (best) for the ANH group, followed by the CNH and CCI groups. The masking release (MR) was comparable between the ANH and CNH group, but much poorer in the CCI group. The temporal properties differed between the native and non-native maskers and between forward and reversed speech. The temporal properties of the maskers were significantly associated with the SRTs for the CCI and CNH groups but not for the ANH group. Whereas the temporal properties of the maskers were significantly associated with the MR for all three groups, the association was stronger for the CCI and CNH groups than for the ANH group.
正常听力儿童（CNH）在分离竞争语音方面比正常听力成人（ANH）更困难。植入人工耳蜗的儿童（CCI）在分离竞争语音方面比 CNH 更困难。在本研究中，使用汉语普通话的 ANH、CNH 和 CCI 测量了竞争语音的语音接受阈值（SRT）。目标句子由一位讲普通话的男性说话者说出。掩蔽器是由母语为普通话的男性（与目标不同）、女性或非母语为英语的男性说出的正向或反向句子。SRT 最低（最佳）的是 ANH 组，其次是 CNH 和 CCI 组。ANH 和 CNH 组之间的掩蔽释放（MR）相当，但 CCI 组的 MR 差得多。掩蔽器的时间特性在母语和非母语掩蔽器以及正向和反向语音之间存在差异。掩蔽器的时间特性与 CCI 和 CNH 组的 SRT 显著相关，但与 ANH 组无关。尽管掩蔽器的时间特性与所有三组的 MR 显著相关，但与 CCI 和 CNH 组的相关性比 ANH 组更强。
