The electroacoustic performance of digital noise reduction systems in commercial hearing aids with Malay speech-plus-noise test signals

Jurnal Sains Kesihatan Malaysia Pub Date : 2024-01-01 DOI:10.17576/jskm-2024-2201-02

Nurul Najwa Nazri, Wan Syafira Ishak

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Abstract

One of the most frequent complaints of hearing-impaired individuals is difficulty understanding speech in noisy environments. In order to improve listening comforts in background noise, digital noise reduction (DNR) has been incorporated into the hearing aid. However, each hearing aid manufacturer has their own proprietary algorithm for their DNR. Therefore, this study aimed to evaluate the efficacy of the DNR system in commercial hearing aids using the Malay speech-in-noise test. Electroacoustic testing has been performed on six hearing aids that have similar technology but different brands using newly developed Malay speech-in-noise test signals in the condition of DNR on and off. The total root-mean-square (RMS) gain reduction for each HA was calculated. The results show that the type of noise, the signal-to-noise ratio (SNR) and the gender of the speaker have a significant effect on the amount of gain reduction shown by the DNR of the tested hearing aids (p<0.05). In conclusion, clinicians need to measure and understand methods to verify the functionality of DNR before fitting a patient's hearing aid to ensure its effectiveness in real life.

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使用马来语音加噪声测试信号的商用助听器中数字降噪系统的电声性能

听障人士最常抱怨的问题之一就是在嘈杂的环境中难以理解语音。为了改善背景噪声中的听觉舒适度，助听器中加入了数字降噪（DNR）技术。然而，每个助听器制造商都有自己的数字降噪专有算法。因此，本研究旨在通过马来噪声语音测试来评估商用助听器中 DNR 系统的功效。在 DNR 开启和关闭的条件下，使用新开发的马来语噪声测试信号，对六款技术相似但品牌不同的助听器进行了电声测试。计算了每个助听器的总均方根（RMS）增益降低。结果表明，噪声类型、信噪比（SNR）和说话者的性别对测试助听器 DNR 显示的增益降低量有显著影响（P<0.05）。总之，临床医生在为患者验配助听器之前，需要测量并了解验证 DNR 功能的方法，以确保其在实际生活中的有效性。

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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来源期刊

Jurnal Sains Kesihatan Malaysia

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审稿时长

12 weeks