发明名称 |
RECONSTRUCTION OF THE SPECTRUM OF AN AUDIOSIGNAL WITH INCOMPLETE SPECTRUM BASED ON FREQUENCY TRANSLATION |
摘要 |
A method for generating a reconstructed signal comprises: receiving a signal containing data representing a baseband signal derived from an audio signal and an estimated spectral envelope; obtaining from the data a frequency-domain representation of the baseband signal, the frequency-domain representation comprising baseband spectral components; obtaining a regenerated signal comprising regenerated spectral components by copying into individual subbands the lowest-frequency baseband spectral components to a lower edge of a respective subband and continuing through the baseband spectral components in a circular manner to complete a translation for that respective subband; and obtaining a time-domain representation of the reconstructed signal corresponding to a combination of the baseband spectral components, the regenerated spectral components and the estimated spectral envelope. |
申请公布号 |
EP1488414(A1) |
申请公布日期 |
2004.12.22 |
申请号 |
EP20030733840 |
申请日期 |
2003.03.21 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
TRUMAN, MICHAEL, MEAD;VINTON, MARK, STUART |
分类号 |
G10L19/02;G10L21/02 |
主分类号 |
G10L19/02 |
代理机构 |
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代理人 |
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主权项 |
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