1 Clinical Hearing Sciences Laboratory, Division of Speech and Hearing Sciences, University of Hong Kong, Hong Kong SAR, China.
2 Department of Special Education and Counselling, The Education University of Education, Hong Kong SAR, China.
Trends Hear. 2018 Jan-Dec;22:2331216518782839. doi: 10.1177/2331216518782839.
Noise reduction systems have been implemented in hearing aids to improve signal-to-noise ratio and listening comfort. The aim of this study was to evaluate the efficacy of hearing aid noise reduction for Mandarin speakers. The results showed a significant improvement in acceptable noise levels and speech reception thresholds with noise reduction turned on. Sound quality ratings also suggested that most listeners preferred having noise reduction turned on for listening effort, listening comfort, speech clarity, and overall sound quality. These results suggest that the noise reduction system used in this study might improve sentence perception in steady-state noise, noise tolerance, and sound quality, although not all listeners preferred aggressive noise reduction. However, due to large interindividual variation, clinical application of the results should be on an individual basis.
降噪系统已应用于助听器中，以提高信噪比和聆听舒适度。本研究旨在评估助听器降噪对普通话使用者的疗效。结果显示，开启降噪功能后，可听阈和言语接受阈显著提高。音质评估也表明，大多数听众在聆听努力度、聆听舒适度、言语清晰度和整体音质方面更喜欢开启降噪功能。这些结果表明，本研究中使用的降噪系统可能会提高在稳态噪声下的句子感知能力、噪声容忍度和音质，尽管并非所有听众都喜欢强烈的降噪。然而，由于个体间存在较大差异，因此应根据个体情况来应用这些结果。
