发明名称 |
Composite stereophonic signal generator |
摘要 |
A stereophonic signal generator for generating a composite signal for effectively attenuating undesired spurious signals in a modulated signal, e.g., in a four channel stereophonic signal. In the generator, the main spurious signal, which is a spurious signal most closely adjacent to a given or desired frequency band for a necessary signal, is cancelled by a cancellation signal which is in a compensation relationship with the main spurious signal. Thus, residual spurious signals are attenuated easily by simple filters without degrading the necessary signals.
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申请公布号 |
US4041244(A) |
申请公布日期 |
1977.08.09 |
申请号 |
US19750628733 |
申请日期 |
1975.11.04 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMAZAKI, OSAMU;MIKI, SUKEICHI;TAKEZAKI, TSUNEO |
分类号 |
H03C1/04;H04H20/89;(IPC1-7):H04H5/00 |
主分类号 |
H03C1/04 |
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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