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:
Jun. 27, 2017
Filed:
Sep. 22, 2014
Clarion Co., Ltd., Saitama-shi, JP;
Kazutomo Fukue, Saitama, JP;
Takeshi Hashimoto, Motomiya, JP;
Tetsuo Watanabe, Hasuda, JP;
Yasuhiro Fujita, Kashiwa, JP;
CLARION CO., LTD., Saitama-Shi, JP;
Abstract
A sound field measuring device () includes an external output unit () configured to output a measurement signal composed of a periodic function having a code length of 2−1 (n is a natural number) to a speaker (), a microphone () configured to pick up the measurement signal outputted from the speaker (), a Fourier transform unit () configured to obtain frequency characteristics by Fourier transforming measurement sound picked up with a sample length of 2(m is a natural number), a thinning-out unit () configured to remove line spectra except for the (k×2+1)th line spectra (k=0, 1, 2, and the like) from the obtained frequency characteristics, and an averaging unit () configured to obtain averaged frequency characteristics of a sound field on the basis of frequency characteristics thinned-out.