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:
May. 07, 2002
Filed:
Dec. 14, 1998
Tae-Hyun Lee, Incheon, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
A surround signal processing apparatus and method can realize sound image localization and have reverberation effects. In the apparatus, left and right impulse measuring sections measure left and right impulses of a head related transfer function for an input audio signal based on a number of a plurality of lattices defined in a three dimensional space, horizontal and vertical angles defined by a center of a dummy head and the plurality of lattices. Left and right convolution operators convolve left and right channel signals of input audio signal with left and right impulses of head related transfer function, respectively, in order to localize sound image for input audio signal at an objective localization position. Left and right reverberators impart first and second reverberant sounds to left and right channel signals, respectively. According to the apparatus and method, it is possible to reproduce two pseudo surround signals from a pair of virtual rear speakers by use of a pair of actual front speakers; that is, to construct a 4-channel surround system by use of only two speakers. Further, they provides a listener with a feeling of presence as if he is listening to the music in a different sound field such as a spacious concert hall, church or stadium notwithstanding the fact that he is actually in an ordinary room, a listening room, or a vehicle.