比另一个大十分贝的声音，被感觉到是两倍的大声，但事实上是大十倍。
A sound ten decibels louder than another one is felt as twice as loud, when in fact it is ten times louder.
志愿者选择不同音量的喇叭向研究人员发出爆破般的噪声，可选音量在十分贝到震耳欲聋的130分贝之间。
Volunteers chose between horn sounds that blasted noise at the students of varying volumes varying from 10 decibels to a deafening 130 decibels.
因此HOM-BOT最大限度地避免了同类竞争对手的系统缺憾，同时它还十分安静，噪音等级只有60分贝。
As the result, HOM-BOT mostly avoids the pitfalls rival systems often suffer from. It is also quiet, with noise levels reduced to just 60 dB.
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