News tagged with microphones
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. In 1877, Emile Berliner invented the first microphone used as a telephone voice transmitter. 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.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
(Medical Xpress)—Researchers from the Wellcome Trust Sanger Institute's cancer genome project have developed a computer model to identify the fingerprints of DNA-damaging processes that drive cancer development. ...
Genetics Jan 11, 2013 | not rated yet | 0 |
(Medical Xpress) -- Cochlear implants have restored basic hearing to some 220,000 deaf people, yet a microphone and related electronics must be worn outside the head, raising reliability issues, preventing ...
Medical research Apr 30, 2012 | 5 / 5 (2) | 1 |
Technology that turns low-cost mobile phones into sophisticated stethoscopes could save thousands of lives in poor countries.
Cardiology Sep 16, 2011 | not rated yet | 1 |
It is common knowledge that bats and dolphins echolocate, emitting bursts of sounds and then listening to the echoes that bounce back to detect objects. What is less well-known is that people can echolocate too. In fact, ...
Neuroscience May 25, 2011 | 5 / 5 (1) | 0 |