FM radio system for encrypted transmission of speech signals
The invention relates to an FM radio system with a pre-emphasiser (5) at the transmitting end and a de-emphasiser (9) at the receiving end and with devices (3, 11) for encrypted transmission of speech signals. A solution is intended to be devised in this context to improve the speech quality of the...
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Format: | Patent |
Sprache: | eng ; ger |
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