The Effect of Binaural Beamforming Technology on Mandarin Speech Recognition in Babble Noise for Bimodal Hearing CI users.

Journal of otology Pub Date : 2025-07-11 eCollection Date: 2025-07-01 DOI:10.26599/JOTO.2025.9540024

Aiting Chen, Mengdi Hong, Jianan Li, Qian Wang, Nan Li, Lumeng Han, Qian Wu, Haihong Liu, Yidi Liu, Yue Long, Fangxia Hu, Jianfen Luo, Lei Xu, Zhaomin Fan, Peng Lin, Wei Wang, Yue Wang, Yu Chen, Zhaohui Hou, Fei Ji

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Abstract

Purpose: The purpose of the study was to investigate the effect of bimodal beamforming on speech recognition and comfort for cochlear implant (CI) users with the bimodal hearing solution made up by linking a hearing aid to the CI sound processor.

Methods: 19 subjects participated in this study. Speech tests were conducted in quiet and in noisy environments, with the target speech presented from 0° and the noise signal from 45°. Speech recognition thresholds (SRTs) were compared among the previously used bimodal hearing configuration (baseline, any CI sound processor plus any hearing aid), the Naída Bimodal Hearing Solution with omnidirectional microphone, and with directional microphone (so called StereoZoom) switched on. In addition, the study participants provided subjective feedback on their hearing impressions.

Results: The SRT results showed no significant difference among the three hearing conditions in the quiet environment. No significant improvement was reported when using Naída bimodal system with omnidirectional microphone in noise compared to the baseline (p=0.27). When applying StereoZoom, SRT in noise showed significant improvements compared to omnidirectional settings (p<0.05). Subjective feedback showed that 13 participants were satisfied with Naída Bimodal Hearing Solution, and wanted to continue using it after the trial.

Conclusion: The Naída Bimodal Hearing Solution with the same pre-processing algorithm can provide satisfying hearing performance. Beamforming technology can further improve speech perception in noisy environments.

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双耳波束成形技术对双模听力CI用户在嘈杂噪声中普通话语音识别的影响。

目的：研究双峰波束形成对人工耳蜗（CI）使用者语音识别和舒适性的影响，通过将助听器连接到人工耳蜗声音处理器组成双峰听力解决方案。方法：19名受试者参与本研究。语音测试分别在安静和嘈杂环境下进行，目标语音从0°呈现，噪声信号从45°呈现。语音识别阈值（srt）在之前使用的双峰听力配置（基线，任何CI声音处理器加任何助听器），Naída双峰听力解决方案与全向麦克风和定向麦克风（所谓的立体缩放）的开关之间进行比较。此外，研究参与者对他们的听觉印象提供了主观反馈。结果：安静环境下三种听力条件下的SRT结果无显著差异。与基线相比，使用Naída双峰系统与全向麦克风在噪声中没有显著改善（p=0.27）。与全向设置相比，使用StereoZoom时，噪声条件下的SRT有明显改善(p结论：采用相同预处理算法的Naída双峰听力解决方案可以提供令人满意的听力性能。波束成形技术可以进一步提高噪声环境下的语音感知能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of otology

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