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date: 21 October 2019

Fletcher, Harveylocked

  • Murray Campbell

Extract

(b Provo, UT, Sept 11, 1884; d Provo, July 23, 1981). American acoustician. He studied at Brigham Young University in Provo (BS 1907), then at the University of Chicago, where he gained his doctorate in 1911 for research into the charge of the electron. In 1916 he joined the staff of Bell Telephone Laboratories in New York; he remained there for 33 years, becoming director of acoustical research in 1928 and of physical research in 1935. In 1949 Fletcher was appointed professor of electrical engineering at Columbia University, and in 1952 he returned to Brigham Young University as director of research. He became professor emeritus in 1974, and continued his research activity until his death. Fletcher was one of the great pioneers of the science of psychoacoustics, and his work on the human perception of sound was of fundamental importance. Responsible for the first public demonstration of stereophonic sound reproduction in ...

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Journal of the Acoustical Society of America