Generally speaking, microphones convert sound energy into electrical energy. In this regard, they are the exact opposite of the familiar audio speaker .
Microphones are available with a wide variety of sizes, shapes, and operating characteristics.
Some types of microphones even include very small amplifiers inside of them to boost the tiny electrical signal created within the microphone to a more useful level. Use of information in this document implies understanding and agreement with the copyright and terms of use . Specifically, no warranty is expressed or implied regarding the accuracy of the information contained within. All trademarks are property of their respective owners. You must obtain permission from the author before using the contents of The Handbook for anything other than private use.