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:
Jan. 29, 2013
Filed:
Feb. 20, 2008
Takashi Yamakawa, Iwata, JP;
Kenichi Tamiya, Hamamatsu, JP;
Koji Kushida, Hamamatsu, JP;
Ken Iwayama, Hamamatsu, JP;
Takashi Yamakawa, Iwata, JP;
Kenichi Tamiya, Hamamatsu, JP;
Koji Kushida, Hamamatsu, JP;
Ken Iwayama, Hamamatsu, JP;
Yamaha Corporation, , JP;
Abstract
A speaker array apparatus capable of performing directivity control with ease even when sound emission is performed based on audio signals of different frequency ranges. The speaker array apparatus includes a speaker unit for emitting high-frequency range sound, and another speaker unit for emitting low- and high-frequency range sound. A signal processed by a high pass filter is used for generation of both audio signals used by these speaker units to emit the high-frequency range sounds. Since both the audio signals are rotated in phase similarly to each other, the phases of audio signals supplied to both the speaker units are in coincidence with each other in high-frequency range, which makes it easy to carry out directivity control.