摘要
本研究用绝对辨认法与信号清晰度和响度适宜性主观评价测试了60、70和 80dB(A)三种噪声水平下与言语通讯同时呈现的高优先权音调信号的最小强度增量要求。研究结果表明 :在本实验设置的强度范围内 ,音调信号的辨认正确性主要取决于信号的相对强度 ;而音调信号的清晰度和响度适宜性与信号的绝对强度和相对强度都有关。对于采用信号强度自动增益控制的告警系统 ,这是一个值得注意的问题。
The study explores the minimal intensity gain of high priority tone signals presented on the background of speech communication at three noise levels of 60,70 and 80 dB(A).The results show that the absolute judgment accuracy of tone signal depends on the relative intensity of the signal. The clearness of signal and the fitness of loudness are related to both absolute and relative intensity.These results should be considered in the warning system with automatic gain control of signal intensity.
出处
《应用心理学》
CSSCI
2002年第3期3-8,21,共7页
Chinese Journal of Applied Psychology
关键词
双重听觉信号
信/噪比
信号强度增量
double auditory signals,signal/noise ratio,signal intensity gain
