发明名称 |
Method for the compatible transmission and/or storage and decoding of an auxiliary signal |
摘要 |
A method of simultaneously transmitting and decoding an audio signal and an auxiliary signal which is inseparable from the audio signal includes the step of allocating a loudness level to the audio signal which is higher than the level of the auxiliary signal whereby the auxiliary signal is inaudible during playback of the audio signal and does not deteriorate the playback of the audio signal. The audio signal is encoded by dividing it into a number of frequency bands. The auxiliary signal is transmitted in one of the frequency bands at a level much lower than the level of the audio signal.
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申请公布号 |
US5712920(A) |
申请公布日期 |
1998.01.27 |
申请号 |
US19930168295 |
申请日期 |
1993.12.17 |
申请人 |
DEUTSCHE THOMSON-BRANDT GMBH |
发明人 |
SPILLE, JENS |
分类号 |
H03M7/30;G11B20/10;H04B1/64;H04B14/04;H04H20/28;(IPC1-7):H03G3/00 |
主分类号 |
H03M7/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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