| 发明名称 |
MELHORIA DO DESEMPENHO PERCEPTIVO DOS METODOS CODIFICADOS DE RECONSTRUCAO DE FREQUENCIA ELEVADA POR FILTRAGEM ADAPTAVEL |
| 摘要 |
The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises adaptive filtering to reduce artifacts due to different tonal characteristics in different frequency ranges of an audio signal upon which HFR is performed. The present invention is applicable to both speech coding and natural audio coding systems. |
| 申请公布号 |
PT1342230(E) |
申请公布日期 |
2004.09.30 |
| 申请号 |
PT20010983041T |
申请日期 |
2001.11.13 |
| 申请人 |
CODING TECHNOLOGIES AB |
发明人 |
FREDRIK HENN;KRISTOFER KJORLING;PER EKSTRAND;LARS VILLEMOES |
| 分类号 |
G10L19/02;G10L13/00;G10L21/038;(IPC1-7):G10L21/02 |
主分类号 |
G10L19/02 |
| 代理机构 |
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