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. 12, 2014
Filed:
May. 19, 2010
Mi-suk Lee, Daejeon, KR;
Heesik Yang, Gyeongsangnam-do, KR;
Hyun-woo Kim, Daejeon, KR;
Jongmo Sung, Daejeon, KR;
Hyun-joo Bae, Daejeon, KR;
Byung-sun Lee, Daejeon, KR;
Mi-Suk Lee, Daejeon, KR;
Heesik Yang, Gyeongsangnam-do, KR;
Hyun-Woo Kim, Daejeon, KR;
Jongmo Sung, Daejeon, KR;
Hyun-Joo Bae, Daejeon, KR;
Byung-Sun Lee, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Abstract
Provided are a method and an apparatus for encoding and decoding an audio signal. A method for encoding an audio signal includes receiving a transformed audio signal, dividing the transformed audio signal into a plurality of subbands, performing a first sinusoidal pulse coding operation on the subbands, determining a performance region of a second sinusoidal pulse coding operation among the subbands on the basis of coding information of the first sinusoidal pulse coding operation, and performing the second sinusoidal pulse coding operation on the determined performance region, wherein the first sinusoidal pulse coding operation is performed variably according to the coding information. Accordingly, it is possible to further improve the quality of a synthesized signal by considering the sinusoidal pulse coding of a lower layer when encoding or decoding an audio signal in an upper layer by a layered sinusoidal pulse coding scheme.