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一、概述 人耳可闻声的频率范围为２０Ｈｚ～２０ｋＨｚ，要使用同一扬声器来实现全音频信号的重放几乎是不可能的。为此，人们研制了不同工作频段的扬声器，力求使某一个频段的音频信号用一个扬声器来重放，几个扬声器组合起来就可以覆盖整个音频范围。问题是这些杨声器一般不
First, an overview of human audible frequency range of 20Hz ~ 20kHz, to use the same speaker to achieve full audio signal playback is almost impossible. To this end, people have developed different working frequency of the speaker, trying to make a band of audio signals with a speaker to play back, a few speakers can be combined to cover the entire audio range. The problem is that these speakers generally do not