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:
Mar. 01, 2005
Filed:
Jun. 12, 2000
Atsushi Makino, Saitama, JP;
Atsushi Makino, Saitama, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
A dummy listener and right and left speakersandare disposed in an anechoic room as a model of the layout of those a car cabinor the like. Transfer functions ALL, ALR, ARL and ARR in a space ranging from the speakersandto the right and left ears of a listenerin a car cabinor the like are calculated from impulse response series aLL(t) to aRR(t) obtained when pulse sounds are respectively emitted from the speakersand. A correction circuitcontains correction transfer functions H, H, Hand H, which are obtained by an inverse matrix of a 2-row and 2-column regular matrix of which the elements are the transfer functions ALL, ALR, ARL and ARR. Audio signals SL and SR on which head related transfer functions are superimposed are applied to the correction circuit, and the output signals of the correction circuitare supplied to the speakersand