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:
May. 03, 2005
Filed:
Jan. 10, 2003
Applicants:
Tomomitsu Urai, Hamamatsu, JP;
Shinichi Sawara, Kosai, JP;
Fukushi Kawakami, Hamakita, JP;
Inventors:
Assignee:
Yamaha Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H001/02 ;
U.S. Cl.
CPC ...
Abstract
Main speakers are arranged on the enclosure front surface of an electronic piano. Auxiliary speakers (L,R) are arranged on the rear surface of the enclosure. Microphones are arranged in close proximity of the main speakers. A performance sound is regenerated from the main speakers. The regenerated sound from the main speakers is picked up by microphones (L,R). FIR filters are used to generate the reflected signal of a picked-up sound signal from the microphones. The generated reflected sound signal is regenerated from auxiliary speakers.