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It recorded sound signals on a thin steel wire using varying levels of magnetization. [1] [2] The first crude magnetic recorder was invented in 1898 by Valdemar Poulsen. The first magnetic recorder to be made commercially available anywhere was the Telegraphone, manufactured by the American Telegraphone Company, Springfield, Massachusetts in 1903.
The sweeps of the stylus recording the intensity of sound along the frequency axis formed a time record of background noise and specific frequency receptions that formed lines. When representing frequencies generated by propeller blades or machinery those could form a submarine or surface ship signature that could be recognized and used to ...
A "Cockpit Sound Recorder" (CSR) was independently invented and patented by Edmund A. Boniface Jr., an aeronautical engineer at Lockheed Aircraft Corporation. [16] [17] [18] He originally filed with the US Patent Office on February 2, 1961, as an "Aircraft Cockpit Sound Recorder". [19] The 1961 invention was viewed by some as an "invasion of ...
NASA's Perseverance rover recorded a wind gust on Mars with its onboard microphone, sending the recording back for humanity's fist time hearing the wind on Mars.
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Sound recording and reproduction is the electrical, mechanical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording .
Ambient noise data collected by the InSight lander's seismometer gives us a detailed look at what lies right underneath its surface. Scientists used Mars' ambient noise to map the planet's ...
Typically the work involves recording sound outside of a controlled environment like a studio (field recording is an analog of studio recording), to be used or repurposed as sound effects that get inserted into all sorts of media, such as plays, video games, films, and television shows. A career as a professional field recordist is a tough, but ...
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