Wireless Microphones

A microphone is a device for converting acoustic power into electric power that has essentially similar wave characteristics. Microphones convert sound waves into electrical voltages that are eventually converted back into sound waves thru speakers. They were first used with early telephones and then radio transmitters.

A microphone system is designed to replace the cable that usually tethers a wired microphone (or any acoustic transducer) to an amplifier. A system begins with a typical microphone which responds to sound waves, and delivers essentially equivalent audio frequency electrical waves to an input of a transmitter. The transmitter "sends" a signal to an associated receiver which is connected to the input of the sound reinforcement amplifier, or mixer. The receiver "picks-up" the transmitter signal, and then converts this signal to a usable audio signal which is sent to the sound reinforcement amp or mixer.

In 1827, Sir Charles Whetstone was the first person to coin the phrase "microphone."

In 1876, Emile Berliner invented the first microphone used as a telephone voice transmitter. At the U.S. Centennial Exposition, Emile Berliner had seen a Bell Company telephone demonstrated and was inspired to find ways to improve the newly invented telephone

In 1961, First wireless microphone used in a film “Mutiny On The Bounty” with Marlin Brando.

Today they are used for everything from hearing aids to the concert stage. A younger generation may not even remember that microphones once HAD wires!

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