| 摘要 |
The invention relates to a method and a device for dynamic compression of an amplitude-modulated carrier wave. A digital signal is generated, formed of a succession of samples which are representative of the instantaneous amplitude of the modulation signal applied to the carrier wave. Analysis of the digital signal at successive time intervals, by discrimination over each current time interval, In+1, of the maximum value, in absolute value, or peak value, of the samples, EMn+1, makes it possible, from the previous peak value, EMn, corresponding to the time interval preceding the current time interval, to determine the value of the compression ratio, Kn+1, to be applied to the carrier wave. The compression law is formed by the set of values of the compression ratios. Application to transmission of radio broadcast signals or of the sound signal of television signals. <IMAGE>
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