基于听觉诱发电位的不同声环境下人员声舒适度机理及实验研究

Mechanism and Experimental Investigation of Human Acoustic Comfort in Different Acoustic Environments Based on Auditory Evoked Potentials

为了研究声舒适度与听觉诱发电位的关系,使用诱发电位仪记录了不同频率和不同声压级刺激下的听觉诱发电位。结果表明:随着声音频率的提高,诱发电位的波峰越密集,与声音本身的频率特性相匹配;随着声压级的增大,诱发电位幅值增大,解释了人体主观烦恼度随着声压级增大而增加的现象。在不同频率和不同声压级刺激下,Ⅴ波较其他波形稳定,说明人体脑桥上段或中脑下端对声音特性更敏感。研究可为不同声环境下人体声舒适度机理研究做参考。

In order to investigate the relationship between acoustic comfort and auditory evoked potentials,evoked potential meter was used to record auditory evoked potentials at different frequencies and different sound pressure levels.The results show that with the increase of sound frequency,the peaks of the evoked potentials are denser,which matches the frequency characteristics of the sound.As the sound pressure level increases,the amplitude of the evoked potential increases,which explains the phenomenon that the subjective annoyance increases with the increase of the sound pressure level.At different frequencies and different SPL stimuli,V waves are more stable than other waveforms,indicating that the upper pons of the human brain or the midbrains are more sensitive to sound characteristics.The conclusions can be used for the human body comfort mechanism in different acoustic environments as a reference.