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:
Apr. 28, 2020
Filed:
Feb. 14, 2018
Panasonic Intellectual Property Corporation of America, Torrance, CA (US);
Shinichi Yuzuriha, Osaka, JP;
Takeo Kanamori, Osaka, JP;
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA, Torrance, CA (US);
Abstract
A sound collecting apparatus is provided. The sound collecting apparatus includes a plurality of microphones that collects external sounds and sounds from noise sources in the sound collecting apparatus. Each microphone outputs a microphone signal. The microphone signal is divided, on a one-to-one basis for each microphone, into signals in mutually different frequency bands. A signal level is calculated, on a one-to-one basis for each divided microphone signal, for each of the mutually different frequency bands. Correlation values are calculated between the microphones for each group of identical frequency bands according to the signal level calculated for each of the mutually different frequency bands of each divided microphone signal. It is decided whether at least one of the microphones is sound-insulated, according to the correlation values.