发明名称 |
METHOD AND DEVICE FOR BANDWIDTH EXTENSION |
摘要 |
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. |
申请公布号 |
EP2674942(A2) |
申请公布日期 |
2013.12.18 |
申请号 |
EP20120745345 |
申请日期 |
2012.02.08 |
申请人 |
LG ELECTRONICS INC.;GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY |
发明人 |
JEONG, GYU HYEOK;LEE, YOUNG HAN;JEON, HYE JEONG;KIM, HONG KOOK;KANG, IN GYU;KIM, LAG YOUNG |
分类号 |
G10L19/02;G10L21/02;G10L21/0388 |
主分类号 |
G10L19/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|