Abstract：
OBJECTIVE: Digital noise reduction (DNR) minimizes the effect of noise on speech signals by continuously monitoring frequency bands in the presence of noise. In the present study, we explored the effect of DNR technology on speech intelligibility in individuals using hearing aids (HAs) and investigated implications for daily use.
METHODS: Eighteen participants with bilateral moderate sensorineural hearing loss (aged 16-45 years) were included. Bilateral receiver-in-the-ear HAs were fitted in the participants. The adaptive and nonadaptive (with a signal-to-noise ratio (SNR) of +5 and -5 dB, respectively) Turkish matrix sentence test (TURMatrix) in noise and free-field hearing assessments, including hearing thresholds with hearing aids, speech recognition thresholds (SRT), and speech discrimination scores, were conducted in two different conditions: HA in the DNR-on and DNR-off conditions.
RESULTS: No significant difference was observed between free-field hearing assessments with the HA in the DNR-off and DNR-on conditions (P > 0.05). Furthermore, the adaptive and nonadaptive TURMatrix revealed significant differences between the scores under the DNR-on and DNR-off conditions (P < 0.05). Nevertheless, under the DNR-on condition, there was no correlation between free-field hearing assessments with HA and TURMatrix results (P > 0.05). However, a significant correlation was observed between SRT scores with HA and TURMatrix scores (adaptive and nonadaptive, +5 and -5 dB SNR, respectively) under the DNR-off condition (P < 0.05).
CONCLUSIONS: Our study findings suggest that DNR can improve speech intelligibility in noisy environments. Therefore, DNR can enhance an individual\'s auditory comfort by improving their capacity to grasp speech in background noise.
METHODS: Eighteen participants with bilateral moderate sensorineural hearing loss (aged 16-45 years) were included. Bilateral receiver-in-the-ear HAs were fitted in the participants. The adaptive and nonadaptive (with a signal-to-noise ratio (SNR) of +5 and -5 dB, respectively) Turkish matrix sentence test (TURMatrix) in noise and free-field hearing assessments, including hearing thresholds with hearing aids, speech recognition thresholds (SRT), and speech discrimination scores, were conducted in two different conditions: HA in the DNR-on and DNR-off conditions.
RESULTS: No significant difference was observed between free-field hearing assessments with the HA in the DNR-off and DNR-on conditions (P > 0.05). Furthermore, the adaptive and nonadaptive TURMatrix revealed significant differences between the scores under the DNR-on and DNR-off conditions (P < 0.05). Nevertheless, under the DNR-on condition, there was no correlation between free-field hearing assessments with HA and TURMatrix results (P > 0.05). However, a significant correlation was observed between SRT scores with HA and TURMatrix scores (adaptive and nonadaptive, +5 and -5 dB SNR, respectively) under the DNR-off condition (P < 0.05).
CONCLUSIONS: Our study findings suggest that DNR can improve speech intelligibility in noisy environments. Therefore, DNR can enhance an individual\'s auditory comfort by improving their capacity to grasp speech in background noise.
摘要：
目的：数字降噪（DNR）通过在存在噪声的情况下连续监视频带来最大程度地减少噪声对语音信号的影响。在本研究中,我们探讨了DNR技术对使用助听器(HAs)的个体语音清晰度的影响,并研究了其对日常使用的影响.
方法：纳入18名双侧中度感音神经性听力损失（年龄16-45岁）的参与者。在参与者中安装了双边听筒入耳式HAs。自适应和非自适应(信噪比(SNR)为+5和-5dB，分别)噪声和自由场听力评估中的土耳其语矩阵句测试(TURMatrix)，包括助听器的听力阈值，语音识别阈值(SRT)，和言语歧视得分，在两种不同的条件下进行:在DNR开启和DNR关闭条件下的HA。
结果：在DNR关闭和DNR开启条件下，使用HA的自由场听力评估之间没有显着差异（P>0.05）。此外，在DNR-on和DNR-off条件下，适应性和非适应性TURMatrix评分之间存在显着差异（P<0.05）。然而，在DNR开启条件下，自由场听力评估与HA和TURMatrix结果无相关性(P>0.05)。然而,SRT得分与HA和TURMatrix得分(适应性和非适应性，+5和-5dBSNR，分别)在DNR-off条件下(P<0.05)。
结论：我们的研究结果表明，DNR可以改善嘈杂环境中的语音清晰度。因此,DNR可以通过提高个人在背景噪声中掌握语音的能力来增强个人的听觉舒适度。
方法：纳入18名双侧中度感音神经性听力损失（年龄16-45岁）的参与者。在参与者中安装了双边听筒入耳式HAs。自适应和非自适应(信噪比(SNR)为+5和-5dB，分别)噪声和自由场听力评估中的土耳其语矩阵句测试(TURMatrix)，包括助听器的听力阈值，语音识别阈值(SRT)，和言语歧视得分，在两种不同的条件下进行:在DNR开启和DNR关闭条件下的HA。
结果：在DNR关闭和DNR开启条件下，使用HA的自由场听力评估之间没有显着差异（P>0.05）。此外，在DNR-on和DNR-off条件下，适应性和非适应性TURMatrix评分之间存在显着差异（P<0.05）。然而，在DNR开启条件下，自由场听力评估与HA和TURMatrix结果无相关性(P>0.05)。然而,SRT得分与HA和TURMatrix得分(适应性和非适应性，+5和-5dBSNR，分别)在DNR-off条件下(P<0.05)。
结论：我们的研究结果表明，DNR可以改善嘈杂环境中的语音清晰度。因此,DNR可以通过提高个人在背景噪声中掌握语音的能力来增强个人的听觉舒适度。
