Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Key Laboratory of Otolaryngology - Head and Neck Surgery, Beijing Institute of Otolaryngology, Capital Medical University, Ministry of Education, Beijing, China.
Int J Audiol. 2020 Jul;59(7):524-533. doi: 10.1080/14992027.2020.1761035. Epub 2020 May 22.
The purpose of the present study was to examine the effects of NLFC fitting in hearing aids and auditory acclimatisation on speech perception and sound-quality rating in hearing-impaired, native Mandarin-speaking adult listeners. Mandarin consonant, vowel and tone recognition were tested in quiet and sentence recognition in noise (speech-shaped noise at a +5 dB signal-to-noise ratio) with NLFC-on and NLFC-off. Sound-quality ratings were collected on a 0-10 scale at each test session. A generalised linear model and correlational analyses were performed. Thirty native Mandarin-speaking adults with moderate-to-severe sensorineural hearing loss were recruited. The hearing-impaired listeners showed significantly higher accuracy with NLFC-on than with NLFC-off for consonant and sentence recognition and the recognition performance improved with both NLFC-on and off as a function of increased length of use. The satisfaction score of sound-quality ratings for different types of sounds significantly increased with NLFC-on than with NLFC-off. The speech recognition results showed moderate to strong correlation with the unaided hearing thresholds. For native Mandarin-speaking listeners with hearing loss, the NLFC technology provided modest but significant improvement in Mandarin fricative and sentence recognition. Subjectively, the naturalness and overall preference of sound-quality satisfaction judgement also improved with NLFC.
本研究旨在探讨助听设备中的 NLFC 适配和听觉适应对母语为普通话的成年听力障碍者言语感知和音质评价的影响。在安静环境和噪声环境（信噪比为+5dB 的语音噪声）下，使用 NLFC 开启和关闭分别测试普通话辅音、元音和声调识别以及句子识别。在每次测试中，使用 0-10 分制收集音质评价。进行了广义线性模型和相关分析。共招募了 30 名母语为普通话、中度至重度感音神经性听力损失的成年人。与 NLFC 关闭相比，听力障碍者在辅音和句子识别方面使用 NLFC 开启时的准确率明显更高，并且随着使用时间的增加，NLFC 开启和关闭均可提高识别性能。不同类型声音的音质评价满意度评分随着 NLFC 开启而显著提高。言语识别结果与未助听听力阈值具有中度至高度相关性。对于母语为普通话、有听力损失的听众，NLFC 技术可适度但显著提高普通话擦音和句子识别。主观上，自然度和整体音质满意度评价偏好也随着 NLFC 而提高。
