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. 21, 1997
Filed:
Oct. 27, 1994
Applicant:
Inventors:
Jonathan S Abel, Palo Alto, CA (US);
Scott H Foster, Groveland, CA (US);
Assignee:
Aureal Semiconductor Inc., Fremont, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04S / ;
U.S. Cl.
CPC ...
381 17 ; 381 63 ;
Abstract
Spatialization of soundfields is accomplished by filtering audio signals using filters having unvarying frequency response characteristics and amplifying signals using amplifier gains adapted in response to signals representing sound source location and/or listener position. The filters are derived using a singular value decomposition process which finds the best set of component impulse responses to approximate a given set of head related transfer functions. Efficient implementations for rendering reflection effects, and for spatializing multiple sound sources and/or generating multiple output signals are disclosed.