发明名称 |
MUSIC INFORMATION ENCODING DEVICE AND METHOD, AND MUSIC INFORMATION DECODING DEVICE AND METHOD |
摘要 |
In an audio-information encoding apparatus, in order to encode an audio signal containing a white-noise component, an index iL indicating the energy level of the white-noise component and an index iR designating the start index of a random-number table are introduced into a code train. In an audio-information decoding apparatus (20), a white-noise generating unit (25) uses the indices iL and iR contained in the code train, thereby generating a white-noise signal Sw(t) on the time axis, which has the same level as the white noise, and an adder (26) adds the white-noise signal to an audio signal Sf(t) decoded on the time axis, outputting as an output audio signal So(t). <IMAGE>
|
申请公布号 |
EP1564724(A1) |
申请公布日期 |
2005.08.17 |
申请号 |
EP20030754092 |
申请日期 |
2003.10.10 |
申请人 |
SONY CORPORATION |
发明人 |
SUZUKI, SHIRO,;TSUJI, MINORU,;TOYAMA, KEISUKE |
分类号 |
G10L19/02;H03M7/30;(IPC1-7):G10L19/02 |
主分类号 |
G10L19/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|