Alan Blumlein
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Alan Dower Blumlein was an English electronics engineer, notable for his many inventions in telecommunications, sound recording, stereophonic sound, television and radar. He received 128 patents and was considered one of the most significant engineers and inventors of his time.
Halifax II V9977, which crashed on 7 June 1942, pictured at RAF Defford. Note the H2S radome under the belly.
Memorial window at Goodrich Castle commemorating Blumlein and the other engineers, scientists and servicemen involved in radar development
Blue Plaque located in Ealing, West London
IEEE milestone plaque located on the right hand side of the front door at Abbey Road Studios
Stereophonic sound
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Stereophonic sound, or more commonly stereo, is a method of sound reproduction that recreates a multi-directional, 3-dimensional audible perspective. This is usually achieved by using two independent audio channels through a configuration of two loudspeakers in such a way as to create the impression of sound heard from various directions, as in natural hearing.
Diagram of Clément Ader's théatrophone prototype at the Opera during the World Exhibition in Paris (1881)
Bell Labs binaural demonstration at World's Fair
Domestic stereo system, having two speakers