König Clara, Baumann Uwe, Stöver Timo, Weissgerber Tobias
Audiological Acoustics, ENT Department, University Hospital, Goethe University Frankfurt, 60590 Frankfurt am Main, Germany.
ENT Department, University Hospital, Goethe University Frankfurt, 60590 Frankfurt am Main, Germany.
J Clin Med. 2024 Sep 5;13(17):5269. doi: 10.3390/jcm13175269.
(1) : The aim of the present study was to assess the impact of reverberation on speech perception in noise and spatial release from masking (SRM) in bimodal or bilateral cochlear implant (CI) users and CI subjects with low-frequency residual hearing using combined electric-acoustic stimulation (EAS). (2) : In total, 10 bimodal, 14 bilateral CI users and 14 EAS users, and 17 normal hearing (NH) controls, took part in the study. Speech reception thresholds (SRTs) in unmodulated noise were assessed in co-located masker condition (S0N0) with a spatial separation of speech and noise (S0N60) in both free-field and loudspeaker-based room simulation for two different reverberation times. (3) : There was a significant detrimental effect of reverberation on SRTs and SRM in all subject groups. A significant difference between the NH group and all the CI/EAS groups was found. There was no significant difference in SRTs between any CI and EAS group. Only NH subjects achieved spatial release from masking in reverberation, whereas no beneficial effect of spatial separation of speech and noise was found in any CI/EAS group. (4) : The subject group with electric-acoustic stimulation did not yield a superior outcome in terms of speech perception in noise under reverberation when the noise was presented towards the better hearing ear.
(1)：本研究的目的是评估混响对双耳或双侧人工耳蜗（CI）使用者以及低频残余听力的CI受试者在噪声中言语感知和掩蔽空间释放（SRM）的影响，这些受试者使用了电声联合刺激（EAS）。(2)：共有10名双耳、14名双侧CI使用者和14名EAS使用者，以及17名正常听力（NH）对照者参与了该研究。在两种不同混响时间下，通过自由场和基于扬声器的房间模拟，在共置掩蔽条件（S0N0）以及语音与噪声空间分离（S0N60）的情况下，评估了未调制噪声中的言语接受阈值（SRT）。(3)：在所有受试者组中，混响对SRT和SRM均有显著的不利影响。发现NH组与所有CI/EAS组之间存在显著差异。任何CI组和EAS组之间的SRT均无显著差异。只有NH受试者在混响中实现了掩蔽空间释放，而在任何CI/EAS组中均未发现语音与噪声空间分离的有益效果。(4)：当噪声朝向听力较好的耳朵呈现时，在混响环境下，电声刺激受试者组在噪声中言语感知方面并未产生更好的结果。
