| 发明名称 |
Audio coding systems and methods |
| 摘要 |
An audio signal is decomposed into lower and upper sub-band and at least the noise component of the sub-band is encoded. At the decoder the audio signal is synthesised by a decoding means which utilises a synthesised noise excitation signal and a filter to reproduce the noise component in the upper sub-band.
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| 申请公布号 |
US6675144(B1) |
申请公布日期 |
2004.01.06 |
| 申请号 |
US20000423758 |
申请日期 |
2000.02.16 |
| 申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
TUCKER ROGER CECIL FERRY;SEYMOUR CARL WILLIAM;ROBINSON ANTHONY JOHN |
| 分类号 |
G10L19/02;G10L19/00;G10L19/005;G10L19/08;G10L19/087;G10L21/02;G10L21/038;H03M7/30;(IPC1-7):G10L13/02 |
主分类号 |
G10L19/02 |
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