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:
Mar. 07, 2017
Filed:
Feb. 08, 2012
Gyu Hyeok Jeong, Seoul, KR;
Young Han Lee, Gwangju, KR;
Hye Jeong Jeon, Seoul, KR;
Hong Kook Kim, Gwangju, KR;
IN Gyu Kang, Seoul, KR;
Lag Young Kim, Seoul, KR;
Gyu Hyeok Jeong, Seoul, KR;
Young Han Lee, Gwangju, KR;
Hye Jeong Jeon, Seoul, KR;
Hong Kook Kim, Gwangju, KR;
In Gyu Kang, Seoul, KR;
Lag Young Kim, Seoul, KR;
LG Electronics Inc., Seoul, KR;
Gwangju Institute Of Science and Technology, Gwangju, KR;
Abstract
Method and device of extending a signal band of a voice or audio signal are provided. The bandwidth extension method includes the steps of: performing a modified discrete cosine transform (MDCT) process on an input signal to generate a first transform signal; generating a second transform signal and a third transform signal on the basis of the first transform signal; generating normalized components and energy components of the first transform signal, the second transform signal, and the third transform signal therefrom; generating an extended normalized component from the normalized components and generating an extended energy component from the energy components; generating an extended transform signal on the basis of the extended normalized component and the extended energy component; and performing an inverse MDCT (IMDCT) process on the extended transform signal.