The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2006
Filed:
Dec. 19, 2001
Toru Hirai, Hamamatsu, JP;
Fukushi Kawakami, Hamakita, JP;
Yasushi Shimizu, Hamamatsu, JP;
Yoshikazu Honji, Hamamatsu, JP;
Masahiro Ikeda, Hamamatsu, JP;
Mikio Tohyama, Tokyo, JP;
Toru Hirai, Hamamatsu, JP;
Fukushi Kawakami, Hamakita, JP;
Yasushi Shimizu, Hamamatsu, JP;
Yoshikazu Honji, Hamamatsu, JP;
Masahiro Ikeda, Hamamatsu, JP;
Mikio Tohyama, Tokyo, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
Sound picked up by a microphone of a first sound field is reproduced by a speaker of a second sound field, and a sound picked up by a microphone of the second sound field is reproduced by the speaker of the first sound field. Sound pressure detection section detects a sound pressure of a sound present in the second (or first) sound field picked up by the microphone of the second (or first) sound field, other than a sound reproduced by the speaker of the first (or second) sound field. Other sound pressure detection section detects a sound pressure with which the sound picked up by the microphone of the second (or first) sound field and reproduced by the speaker of the first (or second) sound field is picked up by the microphone of the first (or second) sound field. Sound-pressure-difference detection section adjusts a gain of an automatic gain adjustment section in such a manner that the two detected sound pressures assume a predetermined relationship. Thus, any sound picked up in one of the first and second sound fields can be reproduced in the other sound field with an enhanced sense of unity and connection between the two sound fields.