Using miniature microphones to record rat's happy squeaks

A team of neurobiologists at the University of Haifa's, Sagol Department of Neurobiology has found, via the use of novel miniature microphones, that rats make sounds when in the company of other rats for no other reason than ...

Less ice means fewer calling seals, finds study

When the sea ice vanishes, Antarctic seals become silent. This is the main conclusion of a new article just published by Dr. Ilse van Opzeeland's research group in the journal Frontiers in Ecology and the Environment. The ...

First audio recorded on Mars reveals two speeds of sound

The first audio recordings on Mars reveal a quiet planet with occasional gusts of wind where two different speeds of sound would have a strange delayed effect on hearing, scientists said Friday.

Hear sounds captured from Mars by NASA's Perseverance rover

Thanks to two microphones aboard NASA's Perseverance rover, the mission has recorded nearly five hours of Martian wind gusts, rover wheels crunching over gravel, and motors whirring as the spacecraft moves its arm. These ...

New laser-based microphone calibration system

Researchers at the National Institute of Standards and Technology (NIST) have conducted the first demonstration of a faster and more accurate way to calibrate certain kinds of microphones.

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Microphone

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, licensed under CC BY-SA