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:
Aug. 03, 2010
Filed:
Aug. 01, 2006
Yasuyuki Kino, Tokyo, JP;
Akira Sakamoto, Tokyo, JP;
Tokihiko Sawashi, Tokyo, JP;
Koji Kobayashi, Kanagawa, JP;
Masahiro Okuno, Kanagawa, JP;
Yasuyuki Kino, Tokyo, JP;
Akira Sakamoto, Tokyo, JP;
Tokihiko Sawashi, Tokyo, JP;
Koji Kobayashi, Kanagawa, JP;
Masahiro Okuno, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A sound field measurement apparatus includes a signal generating unit for outputting a burst signal, a driving unit for driving a speaker using the burst signal, a microphone for picking up an audio output from the speaker, an analog-digital converter for performing analog-digital conversion processing on an output signal from the microphone and outputting picked-up audio data, a filtering unit for performing filtering processing on the picked-up audio data, and an analyzing unit for determining a propagation time of the audio output from the speaker to the microphone in accordance with data output from the filtering unit. In this sound field measuring apparatus, the filtering unit is an IIR filter configured to filter the picked-up audio data forward and then backward along a time axis, or an IIR filter configured to filter the picked-up audio data backward and then forward along the time axis.