Microphone and loudspeaker

It is a kind of transducer,which convert the sound signal into electrical signal.According to their characterstics ,size and applications they are many types, like dynamic microphone,capacitive microphone ,crystal microphone etc.According to those types their basic workings principles, theory are different.In the case of dynamic microphone its principles is that when sound is produced ,its diaphragm is vibrates according to sound signal and produced electrical signal.Micro
phone characterstics involves signal to noise ratio, bandwidth,distortion,their size etc.It is just opposite to loudspeaker.They are come together in applications field ,like radio broadcasting, public
addressing systems telecoms,mobile communications, or every communications field.It has wide range of applications or uses.Microphone plays important role to developed the world by new communications
technology.
Loudspeaker is a kind of transducer,which convert electrical signal into sound signal.According to their characteristics ,size and applications they are many types.This is more usable electronics equipment in communications field,advertising's system etc.

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