我们改进的办法之一是:更换电铃为电子门铃。由于电源放置在电子门铃的塑料包装盒内,因此,可空出抽气盘上的两对接线柱;由于是电子发声,根本不存在机械振动的噪音,也就不会对悦耳的电子音乐造成干扰。改进的办法之二是:增加一套小型的扩音设备。将微型话筒放置在钟罩内,话筒线通过抽气盘上空出 One of our improvements is to replace the bell with an electronic doorbell. Since the power supply is placed in the plastic door box of the electronic doorbell, two pairs of terminal posts on the air pump can be left free. Since it is an electronic sound, there is no mechanical vibration noise at all, and it will not cause pleasing electronic music. interference. The second method of improvement is to add a small set of sound amplification equipment. Place the microphone in the bell and the microphone cable passes through the pump