Toshitada Doi

Toshitada Doi
Toshitada Doi
Born	February 2, 1943 (age 82); Japan
Alma mater	Tokyo Institute of Technology; Tohoku University
Occupation	Engineer

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Toshitada Doi (土井利忠, Doi Toshitada; born February 2, 1943) is a Japanese electrical engineer, who played a significant role in the digital audio revolution. He received a degree in electrical engineering from the Tokyo Institute of Technology in 1964, and a PhD from Tohoku University in 1972.

He joined Sony Japan in 1964 and started the first digital audio project within Sony. He was the driving force behind the PCM adaptor, and was a prominent member of the Sony/Philips taskforce responsible for the design of the Compact Disc.^[1] He created, among others, the CIRC error correction system.^[2] He, with Kees Immink, refutes the myth that the Compact Disc's playing time was determined by Beethoven's Ninth Symphony.^[3]

He was the lead engineer of the DASH multi-track digital audio tape recorder.^[4] In the 1990s, he headed Sony's Digital Creatures Laboratory, where he was responsible for the Aibo,^[5] Sony's robotic dog. In 2003, Doi created the Qrio, a running humanoid robot.

Awards and honors

Fellowship, Audio Engineering Society
Eduard Rhein Prize, 1981^[6]
Silver Medal, Audio Engineering Society^[7]

References

^ Steve Knopper (2009). "Appetite for Self-Destruction: The Rise and Fall of the Record Industry in the Digital Age". Free Press/Simon & Schuster. {{cite journal}}: Cite journal requires |journal= (help)
^ "The Compact Disc Turns 25 by Robert Harley". Retrieved 2025-08-05.
^ K.A. Schouhamer Immink (2018). "How we made the compact disc". Nature Electronics. 1. Retrieved 2025-08-05. An international collaboration between Philips and the Sony Corporation lead to the creation of the compact disc. The author explains how it came about
^ Daniel, Eric D; Denis Mee, C; Clark, Mark H (1999). Magnetic recording: the first 100 years by Eric D. Daniel, C. Denis Mee, Mark H. Clark. ISBN 978-0-7803-4709-0. Retrieved 2025-08-05.
^ "Toshitada Doi, Machine learning luminary - and AIBO's first master". Retrieved 2025-08-05.
^ "Award Winners Eduard Rhein Prize". Retrieved 2025-08-05.
^ AES Awards winners

External links

[1] Steve Knopper (2009). "Appetite for Self-Destruction: The Rise and Fall of the Record Industry in the Digital Age". Free Press/Simon & Schuster. {{cite journal}}: Cite journal requires |journal= (help)

[2] "The Compact Disc Turns 25 by Robert Harley". Retrieved 2025-08-05.

[Imminknature-3] K.A. Schouhamer Immink (2018). "How we made the compact disc". Nature Electronics. 1. Retrieved 2025-08-05. An international collaboration between Philips and the Sony Corporation lead to the creation of the compact disc. The author explains how it came about

[4] Daniel, Eric D; Denis Mee, C; Clark, Mark H (1999). Magnetic recording: the first 100 years by Eric D. Daniel, C. Denis Mee, Mark H. Clark. ISBN 978-0-7803-4709-0. Retrieved 2025-08-05.

[5] "Toshitada Doi, Machine learning luminary - and AIBO's first master". Retrieved 2025-08-05.

[6] "Award Winners Eduard Rhein Prize". Retrieved 2025-08-05.

[7] AES Awards winners

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Authority control databases
International	ISNI VIAF WorldCat
National	United States France BnF data Korea

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