发明名称 |
ADAPTIVE HYBRID TRANSFORM FOR SIGNAL ANALYSIS AND SYNTHESIS |
摘要 |
Analysis and synthesis filter banks such as those used in audio and video coding systems are each implemented by a hybrid transform that comprises a primary transform in cascade with one or more secondary transforms. The primary transforms for the filter banks implement an analysis/synthesis system in which time-domain aliasing artifacts are cancelled. The secondary transforms, which are in cascade with the primary transforms, are applied to blocks of transform coefficients. The length of the blocks is varied to adapt the time resolution of the analysis and synthesis filter banks. |
申请公布号 |
CA2554381(C) |
申请公布日期 |
2014.11.04 |
申请号 |
CA20052554381 |
申请日期 |
2005.01.21 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
VINTON, MARK STUART;DAVIDSON, GRANT ALLEN |
分类号 |
H03M7/30;G06F17/14;G06T9/00;G10L19/02;G10L19/022;H04N7/26;H04N7/30 |
主分类号 |
H03M7/30 |
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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