摘要
Abstract
Objective To explore the differences in horizontal sound source recognition and localization abilities among people with normal hearing under different noise conditions.Methods 78 normal hearing individuals examined at our hospital from August 2022 to August 2023 were selected to test the root mean square error(RMSE)and the average response time of the speaker and speaker under quiet conditions,with white noise of 35 dB SPL,white noise of 40 dB SPL,and speech noise of 40 dB SPL.Results There was no statistically significant difference in the average response time of subjects under different noise conditions(P>0.05).The RMSE of the subjects under quiet conditions was(10.21±1.55)°,significantly lower than that under white noise conditions of 35 dB SPL,white noise conditions of 40 dB SPL,and speech noise conditions of 40 dB SPL(P<0.05).The RMSE of subjects under white noise 40 dB SPL and speech noise 40 dB SPL conditions were(15.02±2.22)° and(15.16±2.06)°,respectively,significantly higher than those under white noise 35 dB SPL and(P<0.05).There was no statistically significant difference in the average response time of subjects to low-frequency,intermediate,and high-frequency stimuli under quiet,white noise 35 dB SPL,white noise 40 dB SPL,and speech noise 40 dB SPL conditions(P>0.05).Under the conditions of 35 dB SPL and 40 dB SPL white noises,the RMSE of subjects to high-frequency stimuli was higher than that of low-frequency and intermediate stimuli(P<0.05).Under the condition of 40 dB SPL speech noise,the RMSE of subjects to high-frequency stimuli was higher than that to low-frequency stimuli(P<0.05).Under the conditions of quietness,white noises of 35 dB SPL,and 40 dB SPL,and speech noise of 40 dB SPL,the RMSE of the subjects towards the front sound source was significantly lower than that of other directions(P<0.05).There was no statistically significant difference in the average response time of subjects to the front and other directional sound sources under quiet,white noise 35 dB SPL,white noise 40 dB SPL,and speech noise 40 dB SPL conditions(P>0.05).There was no statistically significant difference in RMSE and average response time among subjects of different genders and ages under quiet,white noise 35 dB SPL,white noise 40 dB SPL,and speech noise 40 dB SPL conditions(P>0.05).Conclusion Noise has a significant impact on the ability of normal hearing individuals to identify and locate sound sources.Under different noise conditions,subjects are more likely to locate sound sources from the front.关键词
听力正常/声源定位/白噪声/言语噪声Key words
Normal hearing/Sound source localization/White noise/Speech noise分类
医药卫生
