发明名称 |
METHOD AND APPARATUS FOR LOSSLESS ENCODING OF A SOURCE SIGNAL, USING A LOSSY ENCODED DATA STREAM AND A LOSSLESS EXTENSION DATA STREAM |
摘要 |
The invention is related to lossless encoding of a source signal (S PCM ), using a lossy encoded data stream and a lossless extension data stream which together form a lossless encoded data stream (S ENC ) for said source signal, whereby lossless audio compression means audio coding with bit-exact reproduction of the original PCM samples at decoder output. The lossy encoding/decoding may be an mp3 coding/decoding. The invention uses an integer MDCT and frequency domain decorre-lation (16) and time domain de-correlation (16) for the residual signal of the base-layer lossy audio codec. The exploitation of side information from the lossy base-layer codec allows for reduction of redundancies in the gross bit stream, thus improving the coding efficiency of the lossy based lossless codec. |
申请公布号 |
EP2044589(A1) |
申请公布日期 |
2009.04.08 |
申请号 |
EP20070787481 |
申请日期 |
2007.07.12 |
申请人 |
THOMSON LICENSING |
发明人 |
JAX, PETER;KEILER, FLORIAN;WUEBBOLT, OLIVER;KORDON, SVEN;BOEHM, JOHANNES |
分类号 |
G10L19/00;G10L19/14;G10L19/24 |
主分类号 |
G10L19/00 |
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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