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英国Sound Alert公司开发的、得到利兹大学的科研人员协助的火警装置,利用声音的频率使得在充满烟雾的大楼内的人们能够正确地寻找出声源的位置而找到逃生出口。传统的声响报警系统的音频范围约为800Hz～3kHz,仅使人们意识到危险。然而,现在的这种火警装置发出一种便于人们能确定声源位置——类似于瀑布的噪声。在这新的火警装置中,全波段噪声还可由一连串的上升或下降的声调作伴音,以显示出紧急通道。利兹大学正在对该火警装置进行实际试验,被
Fire alarms, developed by the British company Sound Alert and assisted by researchers at the University of Leeds, utilize the frequency of sound to enable people in smoke-filled buildings to find the source of the sound correctly and find their escape exit. The traditional audible alarm system has an audio range of about 800Hz ~ 3kHz, only to make people aware of the danger. However, the current fire alarm system emits noise that makes it easier for people to locate the sound source - similar to a waterfall. In this new fire alarm, the full band noise can also be accompanied by a series of rising or falling tones to show the emergency channel. The University of Leeds is actually testing the fire alarm