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 is a national research university located in Greater Tokyo Area, Japan. Tokyo Tech is the largest institution for higher education in Japan dedicated to science and technology, one of first five Designated National University and selected as ...

in 1964, and a PhD from

Tohoku University , or is a Japanese national university located in Sendai, Miyagi in the Tōhoku Region, Japan. It is informally referred to as . Established in 1907, it was the third Imperial University in Japan and among the first three Designated National ...

in 1972. He joined

Sony , commonly stylized as SONY, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. As a major technology company, it operates as one of the world's largest manufacturers of consumer and professional ...

Japan in 1964 and started the first digital audio project within Sony. He was the driving force behind the

PCM adaptor A PCM adaptor is a device that encodes digital audio as video for recording on a videocassette recorder. The adapter also has the ability to decode a video signal back to digital audio for playback. This digital audio system was used for mast ...

, and was a prominent member of the Sony/Philips taskforce responsible for the design of the

Compact Disc The compact disc (CD) is a Digital media, digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. In August 1982, the first compact disc was manufactured. It was then rele ...

. He created, among others, the

CIRC Circ or CIRC may refer to: * Čirč, a village and municipality in northern Slovakia * Circ (company), a German scooter-sharing company acquired by Bird * Circ (duo), an American music duo * China Insurance Regulatory Commission * Climate Impact ...

error correction system. He, with

Kees Immink Kornelis Antonie "Kees" Schouhamer Immink (born 18 December 1946) is a Dutch scientist, inventor, and entrepreneur, who pioneered and advanced the era of digital audio, video, and data recording, including popular digital media such as Compact D ...

, refutes the myth that the

's playing time was determined by

Beethoven Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. Beethoven remains one of the most admired composers in the history of Western music; his works rank amongst the most performed of the classical ...

's Ninth Symphony. He was the lead engineer of the

DASH The dash is a punctuation mark consisting of a long horizontal line. It is similar in appearance to the hyphen but is longer and sometimes higher from the baseline. The most common versions are the endash , generally longer than the hyphen b ...

multi-track digital audio tape recorder. In the 1990s, he headed Sony's Digital Creatures Laboratory, where he was responsible for the

Aibo AIBO (''stylized aibo, Artificial Intelligence Robot'', homonymous with , "pal" or "partner" in Japanese) is a series of robotic dogs designed and manufactured by Sony. Sony announced a prototype Aibo in mid-1998, and the first consumer model wa ...

, Sony's robotic dog. In 2003, Doi created the Qrio, a running humanoid robot.

Awards and honors

*Fellowship,

Audio Engineering Society The Audio Engineering Society (AES) is a professional body for engineers, scientists, other individuals with an interest or involvement in the professional audio industry. The membership largely comprises engineers developing devices or products ...

Eduard Rhein Eduard Rudolph Rhein (23 August 1900, Königswinter – 15 April 1993, Cannes) was an inventor, publisher, and writer. He was the founder of the German magazine ''Hörzu'', which he directed as its editor-in-chief until 1964. He also founded th ...

Prize, 1981 *Silver Medal,

AES Awards winners
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References

External links

Toshitada Doi, Machine learning luminary - and AIBO's first masterFour Qrio’s perform various dance numbers
{{DEFAULTSORT:Doi, Toshitada Japanese electrical engineers Japanese inventors Living people 1943 births Tokyo Institute of Technology alumni Tohoku University alumni