Article: Publication No. WO/2009/130780 Published on Oct. 29, Assigned to Pioneer, Tohoku Pioneer for Speaker System (Japanese Inventors)

GENEVA, Oct. 31 -- Tempei Katsuta and Hiroshi Kaiwa, both of Japan, have developed a speaker system.

The patent has been assigned to Pioneer Corp., Tokyo, and Tohoku Pioneer Corp., Yamagata, Japan.

According to an abstract posted by the World Intellectual Property Organization: "A speaker system which restrains standing sound waves arising at a cabinet to reduce unwanted vibration, and radiates high-quality reproduced sound from an acoustic radiation section on an acoustic port. On a first cabinet of a speaker system, a port cover which is shaped to cover a part of an acoustic radiation section at specified intervals is formed at the acoustic radiation side of the ...

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