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. 23, 2024
Filed:
Jan. 13, 2023
Electronics and Telecommunications Research Institute, Daejeon, KR;
Industry-academic Cooperation Foundation, Yonsei University, Seoul, KR;
In Seon Jang, Daejeon, KR;
Seung Kwon Beack, Daejeon, KR;
Jong Mo Sung, Daejeon, KR;
Tae Jin Lee, Daejeon, KR;
Woo Taek Lim, Daejeon, KR;
Byeong Ho Cho, Daejeon, KR;
Hong Goo Kang, Seoul, KR;
Ji Hyun Lee, Seoul, KR;
Chan Woo Lee, Seoul, KR;
Hyung Seob Lim, Seoul, KR;
Abstract
A method, executed by a processor for compressing an audio signal in multiple layers, may comprise: (a) restoring, in a highest layer, an input audio signal as a first signal; (b) restoring, in at least one intermediate layer, a signal obtained by subtracting an upsampled signal, which is obtained by upsampling the audio signal restored in the highest layer or an immediately previous intermediate layer, from the input audio signal as a second signal; and (c) restoring, in a lowest layer, a signal obtained by subtracting an upsampled signal, which is obtained by upsampling the audio signal restored in an intermediate layer immediately before the lowest layer, from the input audio signal as a third signal, wherein the first signal, the second signal, and the third signal are combined to output a final restoration audio signal.