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:
Jul. 10, 2007
Filed:
Aug. 13, 2003
Applicants:
Ta-jung Yeh, Taipei, TW;
Wen-lung Tseng, Taipei, TW;
Ching-jung Chu, Taipei, TW;
Inventors:
Assignee:
VIA Technologies, Inc., Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 19/00 (2006.01); H04R 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for realizing virtual multi-channel by spectrum analysis is disclosed. The low-frequency-effect sound data is obtained by averaging sound data of left and right channels in the two-channel sound source and filtering the average by a first low pass filter. The central channel sound data is obtained by averaging sound data of the left and the right channels in the two-channel sound source and filtering the average by a second low pass filter. The surround right and left sound data is obtained by copying sound data of the left and the right channels in the two-channel sound source, respectively.