Community Value 25
Purchase includes free access to book updates online and a free trial membership in the publisher's book club where you can select from more than a million books without charge. Chapters: Nick Hornby, Stephen Menheniott, Anna Smith, David Hewlett, Alex Tapp, Tim Dry, Danny Moss, George Andr Robertson, Dave Askew, Alec Reeves, Hazel Thompson, Bevis Hillier, Roy Lynes, Carole Hersee, Paul Alcock, Nigel Robertson, Robert Milsom, Karen Brown, Liz May Brice, Walter Kingsford, Mike Christie, Tyler Butterworth, David Hurn, Steffan Piolet, George Frederick Howe, Raymond Mortimer, Paul Jackson, Francis Cottam. Excerpt: Alec Harley Reeves, CBE (March 10, 1902 - October 13, 1971) was a British scientist best known for his invention of pulse-code modulation (PCM). He was awarded 82 patents . Early life Alec Reeves was born in Redhill, Surrey in 1902 and was educated at the Reigate Grammar School, followed by a scholarship to the City and Guilds Engineering College in 1918, and then postgraduate studies at Imperial College London in 1921. Career Reeves joined the International Western Electric Company in 1923, and was part of a team of engineers responsible for the first commercial transatlantic telephone link. In 1925 Western Electric's European operations were acquired by ITT, and in 1927 Reeves was transferred to ITT's research laboratories in Paris . Whilst in Paris, he was responsible for a number of projects, including: a short-wave radio link between the telephone networks of Spain and South America, the world's first single-sideband radio telephone system, and developed a multi-channel carrier system for UHF radio telephones. He was also responsible for innovations in the design of automatic frequency control circuits, digital delay lines and condenser microphones . Pulse Code Modulation Reeves recognised the potential that pulse-code modulation had for reducing noise when speech is transmitted over long distances. With an analogue signal every time the signal i...Show more
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