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.
Planetary Sciences
Apr 1, 2022
16
8243
Scientists have developed a graphene based microphone nearly 32 times more sensitive than microphones of standard nickel-based construction.
Nanomaterials
Nov 26, 2015
2
6305
An international team of researchers analyzing the sounds captured by the Perseverance rover has determined the speed of sound on Mars. Baptiste Chide, with Los Alamos National Laboratory, gave a presentation at this year's ...
Stanford physicists have developed a "quantum microphone" so sensitive that it can measure individual particles of sound, called phonons.
Quantum Physics
Jul 27, 2019
12
7450
For the first time, a spacecraft on another planet has recorded the sounds of a separate spacecraft. NASA's Perseverance Mars rover used one of its two microphones to listen as the Ingenuity helicopter flew for the fourth ...
Planetary Sciences
May 7, 2021
13
3250
(PhysOrg.com) -- iPhones are being used as musical instruments in a new course at the University of Michigan.
Hi Tech & Innovation
Dec 1, 2009
0
0
(PhysOrg.com) -- Scientists from Chalmers have demonstrated a new kind of detector for sound at the level of quietness of quantum mechanics. The result offers prospects of a new class of quantum hybrid circuits that mix acoustic ...
Quantum Physics
Feb 6, 2012
2
0
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 ...
Planetary Sciences
Oct 18, 2021
0
1290
A Japanese-developed robot that mimics the movements of its human controller is bringing the Hollywood blockbuster "Avatar" one step closer to reality.
Robotics
Feb 10, 2012
15
0
(Phys.org) —A team of researchers in Korea has discovered a way to allow sound to pass through walls almost as if they were not there at all. As the group describes in their paper published in the journal Physical Review ...
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
