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(一)高声打电话未必能听清 “喂,你声音大一点,我听不清楚。”其实,声音越大对方越听不清楚。我们知道,送、受话器在电话机中,担负着声电互变的作用。当发话人以正常响度打电话时,送话器中的振动膜振动得协调、合拍,因而能原原本本地完成转换任务。如果声音太大,当声音作用到送话器振动膜上的声力超过一定限度时,振动膜便不能驯服地随声波而振动,受话人听到的声音就会不自然(失真)。 另一方面,当强声作用于人耳时,耳内就会产生附加泛音(谐音),所听到的已不是原来的声音,甚至明明
(A) loudly may not be able to hear the call, “Hey, your voice a bit bigger, I can not hear clearly.” In fact, the louder the louder the other side can not hear clearly. We know that sending and receiving phones are on the telephone, playing the role of mutual change of sound and electricity. When the caller makes a normal loudness call, the vibrating membrane in the microphone vibrates in harmony and co-ordinates, thus completing the conversion task. If the sound is too loud, the vibrating membrane can not tame with the sound waves when the sound is applied to the vibrating membrane of the microphone for more than a certain amount of sound, and the sound heard by the person becomes unnatural (distorted). On the other hand, when the strong sound effect on the human ear, the ear will have additional overtones (homonym), what you hear is not the original sound, or even clearly