sound recording Conversion of sound waves into a form that can be stored and reproduced. Thomas Edison's phonograph (1877) recorded sound vibrations as indentations made by a stylus on a revolving cylinder wrapped in tinfoil. Another US inventor, German-born Emile Berliner produced a gramophone that improved the process by using a zinc disc instead of a cylinder. The volume was amplified by the addition of acoustical horns, which were replaced before World War 1 by valve amplifiers. Moulded thermoplastic records were introduced in 1901. In 1927 and 1928 patents were issued in the USA and Germany for magnetic recording processes. Later innovations include high-fidelity (hi-fi), stereophonic and quadrophonic reproduction. Modern recordings on compact disc (CD) usually employ laser-scanned digital signals.
More From encyclopedia.com
Phonograph , Phonograph Resources The first practical device for recording and reproducing sound was developed by American inventor Thomas Alva Edison (1847–1931)… Record Player , record player or phonograph, device for reproducing sound that has been recorded as a spiral, undulating groove on a disk. This disk is known as a ph… Tape Recorder , tape recorder Device which records and plays back sound on magnetically treated tape. Sound transforms into electric current and feeds to a transduce… Magnetic Recording , Magnetic Recording/Audiocassette Audiocassette tape recorders are widely used to record and play back music or speech. Information is stored on a nar… Recorder , re·cord·er / riˈkôrdər/ • n. 1. an apparatus for recording sound, pictures, or data, esp. a tape recorder. 2. a person who keeps records: a poet and… Sounding , sound·ing1 / ˈsounding/ • n. the action or process of measuring the depth of the sea or other body of water. ∎ a measurement taken by sounding. ∎ the…
About this article
All Sources -
Updated Aug 08 2016 About encyclopedia.com content Print Topic
You Might Also Like