Blumlein, Alan Dower (1903-1942)

Most famously responsible for inventing and patenting a stereo recording system.

In 1931 he was granted a patent "Improvements In and Relating to Sound-Transmissions, Sound-Recording and Sound-Reproducing Systems". In this patent he examines the physiology of the human binaural hearing process and the spatial illusion produced by "two or more loudspeakers", the use of multiple microphones for the recording, details a dual 45/45-degree phono cutter head for producing stereo record masters and proposes a means of transmitting stereo radio.

In total Alan Blumlein was granted 128 patents on subjects such as antennas, radar systems and recording systems.

He died in 1942 when he and 10 others were killed during a secret flight testing a radar system.

See also: Binaural.

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Subjects: Famous Scientists & Engineers