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. 18, 2015
Filed:
Jan. 21, 2011
Heesik Yang, Gyeongsangnam-do, KR;
Mi-suk Lee, Daejeon, KR;
Hyun-woo Kim, Daejeon, KR;
Jongmo Sung, Daejeon, KR;
Hyun-joo Bae, Daejeon, KR;
Byung-sun Lee, Daejeon, KR;
Heesik Yang, Gyeongsangnam-do, KR;
Mi-Suk Lee, Daejeon, 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 decoding an audio signal. A method for decoding an audio signal encoded by a layered sinusoidal pulse coding scheme using one or more sinusoidal pulses includes decoding the encoded audio signal, setting a smoothing frequency band of the decoded audio signal according to a layer structure of the layered sinusoidal pulse coding scheme, dividing the smoothing frequency band into one or more subbands, and smoothing the decoded audio signal on a subband-by-subband basis. Accordingly, a decoding operation time can be reduced and the quality of a synthesized signal can be improved by variably setting a frequency band to be smoothed, when decoding an audio signal encoded by a layered sinusoidal pulse coding scheme using one or more sinusoidal pulses.