有部片子，说一个案犯专等高速列车经过时开枪，隆隆列车声淹没了他的枪声，这就是声音的一种掩蔽效应。声音的掩蔽效应，可分为幅度掩蔽与时间掩蔽。幅度掩蔽最容易理解，就是大声掩蔽小声。大家可能都有过这样的经验，嘈杂的环境中，常常听不清电话里的声音，这就是电话的小 One film, said a case of high-speed train and other high-speed train after the shot, rumbling a train flooded his gunshots, and this is the sound of a masking effect. The masking effect of sound can be divided into amplitude masking and time masking. The easiest to understand amplitude masking, is loudly cover the whispered. We may all have had such experience. In noisy environments, we often can not hear the voice on the phone. This is the small phone