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Ricoh Synchrofax is a Japanese dictating machine from 1959, reissued in 1974 as the 3M Sound Page (model 627AA and 627AG) as official teaching material in the US-state of Oklahoma. [1] It is also known as sound paper. Inventor Sakae Fujimoto filed the patents US3074724A and US3046357A in 1959. [2] [3]
3M Company (originally ... when a prototype machine was brought to the Sound 80 studios ... by 3M for the production of pad conditioners, as of 2011. [123] 3M has ...
Nagra introduced digital reel-to-reel tape recorders for use in film sound recording. Best known for its lines of tape media and professional analog recorders, with its M series of multitrack and 2-track machines, the Mincom division of 3M spent several years developing a digital recording system, including two years of joint research with the BBC.
A pair of headphones being tested inside an anechoic chamber for soundproofing. Soundproofing is any means of impeding sound propagation.There are several methods employed including increasing the distance between the source and receiver, decoupling, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles for absorption, or using ...
Scotch-brite. Scotch-Brite is a line of abrasive products produced by 3M.The product line includes scouring pads and tools for home uses such as dish washing and scrubbing, as well as various types of surfaces for industrial applications, such as discs, belts, and rotating brushes, with varying compositions and levels of hardness.
The nearly square-shaped cartridges are among the largest built. More than 24 hours of playback fits on a cartridge. The music distributed by 3M consisted of mono recordings some of which are attributed to the company's "3M Orchestra", with later editions featuring a themed blend of library music tracks and mostly instrumental cover versions of standard songs, and classical pieces arranged in ...
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