发明名称 |
DEVICE AND METHOD FOR BANDWIDTH EXTENSION FOR ACOUSTIC SIGNALS |
摘要 |
The purpose of the present invention is to more efficiently extend, using a low bit rate, the bandwidth of input signals having a harmonics structure, in order to obtain better audio quality. The present invention is installed in a device that extends bandwidth for audio signal encoding and decoding. This novel bandwidth extension encoding identifies a low-frequency spectrum component having the highest correlation to a high-frequency bandwidth signal among input signals, duplicates a high-frequency spectrum by energy adjustment of said component, and maintains the harmonic relationship between the low-frequency spectrum and the duplicated high-frequency spectrum by adjusting the spectral peak position of the duplicated high-frequency spectrum, on the basis of a harmonic frequency estimated from a composite low-frequency spectrum. |
申请公布号 |
EP3010018(A1) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20140811296 |
申请日期 |
2014.06.10 |
申请人 |
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA |
发明人 |
NAGISETTY, SRIKANTH;LIU, ZONGXIAN |
分类号 |
G10L21/0388;G10L19/02;G10L19/035 |
主分类号 |
G10L21/0388 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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