cordless microphone

[suhanee]

How does a microphone work if it's cordless? What I'm wondering is like...if you buy one off a website does it come with an amp? Or would the website be like 'comes with portable amp'. And do you need an amp for microphones? I'm so confused!! Please help!
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[desmin88]

Hmm.

 

[βeta]

Find me a wireless microphone, and I'll tell you.

 

[Hermaphroditus]

A microphone works the same way it normally does when it's cordless, except it will send radio or whatever frequency waves to a receiver instead of being directly wired. Yes, microphones do need a form of amplification. And I'm not entirely sure if it would say it includes the amplifier, I would think the receiver would have some sort of amplifier in it, but things are not always as you would think.

Anywho:
If you didn't know, microphones work by a vibrating diaphragm that turns the varying sound energy into varying electrical energy. (For a wireless microphone, the varying current would be transferred into varying light waves that would be picked up elsewhere and translated back into varying electrical current.)