发明名称 |
AN ENCODER PROGRAMMED TO ADD A DATA PAYLOAD TO A COMPRESSED DIGITAL AUDIO FRAME |
摘要 |
An MPEG 1 layer II encoder can be programmed to add a data payload to a frame. It uses a conventional Musicam pyshoacoustic model to apply a sub-band resolution parameter that is constant across a window of a given number of samples. The encoder is further programmed to apply a sub-band resolution algorithm that generates a more accurate set of resolution parameters that vary across at least part of a given window, the difference between the constant parameter and the variable resolution parameters for the same window being indicative of bits which can be overwritten with the data payload. |
申请公布号 |
EP1419501(A1) |
申请公布日期 |
2004.05.19 |
申请号 |
EP20020751415 |
申请日期 |
2002.08.13 |
申请人 |
RADIOSCAPE LIMITED |
发明人 |
FERRIS, GAVIN ROBERT;CALCAGNO, ALESSIO PIETRO |
分类号 |
G10L19/018;(IPC1-7):G10L19/14 |
主分类号 |
G10L19/018 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|