发明名称 |
Method and apparatus for encoding digital signals employing bit allocation using combinations of different threshold models to achieve desired bit rates |
摘要 |
A method for encoding a digitized audio signal which includes the step of selecting one of two or more psycho acoustic model provided for generating masking thresholds used in a data reduction process. The selecting criterion is the available data rate for the encoded bit stream. Each one of the two or more psycho acoustic models is adapted to a specific data rate of the encoded bit stream. In a second embodiment, the method includes the step of combining two or more masking thresholds resulting from different psycho acoustic models, thereby leading to a more accurate calculation of a masking threshold for the data reduction process. Further, there are appropriate apparatuses for the encoding of digitized audio signals.
|
申请公布号 |
US6009399(A) |
申请公布日期 |
1999.12.28 |
申请号 |
US19970838297 |
申请日期 |
1997.04.16 |
申请人 |
DEUTSCHE THOMSON-BRANDT GMBH |
发明人 |
SPILLE, JENS |
分类号 |
H03M7/30;H04B1/66;H04L5/00;(IPC1-7):G10L7/04 |
主分类号 |
H03M7/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|