- published: 22 Feb 2016
- views: 8640
A microphone (colloquially called a mic or mike; both pronounced /ˈmaɪk/) is an acoustic-to-electric transducer or sensor that converts sound into an electrical signal. Microphones are used in many applications such as telephones, tape recorders, karaoke systems, hearing aids, motion picture production, live and recorded audio engineering, FRS radios, megaphones, in radio and television broadcasting and in computers for recording voice, speech recognition, VoIP, and for non-acoustic purposes such as ultrasonic checking or knock sensors.
Most microphones today use electromagnetic induction (dynamic microphone), capacitance change (condenser microphone), piezoelectric generation, or light modulation to produce an electrical voltage signal from mechanical vibration.
Both Thomas Alva Edison and Emile Berliner filed patent applications for the carbon microphone, in March and June 1877 respectively. After a long legal battle, Edison emerged the victor, and the Berliner patent was ruled invalid by both American and British courts.
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Actors: Jay Leno (actor), Greg Kinnear (actor), James Earl Jones (actor), Jim Broadbent (actor), Drew Carey (actor), Terry Bradshaw (actor), Dan Hedaya (actor), Marshall Efron (actor), Marshall Efron (actor), Marshall Efron (actor), Marshall Efron (actor), Mel Brooks (actor), Paul Giamatti (actor), Lowell Ganz (actor), Ewan McGregor (actor),
Plot: Even in a world populated entirely by mechanical beings Rodney Copperbottom is considered a genius inventor. Rodney dreams of two things, making the world a better place and meeting his idol, the master inventor Bigweld. On his journey he encounters Cappy, a beautiful executive 'bot with whom Rodney is instantly smitten, the nefarious corporate tyrant Ratchet who locks horns with Rodney, and a group of misfit 'bots known as the Rusties, led by Fender and Piper Pinwheeler.
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