FIELD: radio engineering, communication.
SUBSTANCE: device for embedding digital information into an audio signal includes, connected to its first input, a first input of a subtractor and a band-pass filter, the output of which is connected to the first input of an adder and the second input of the subtractor, the output of which is connected, through series-connected residual signal analyser and replacement signal former, to the second input of the adder, the output of which is connected to the first input of an additional adder and a signal divider, the output of which is connected, through series-connected amplitude spectrum computer, global masking threshold computer and subsidiary signal former, to the second input of the additional adder, wherein additional inputs of the replacement signal former and the subsidiary signal former are connected to the second input of the embedding device, and the output of the additional adder is connected to the output of the embedding device.
EFFECT: minimising duration of transmission with minimum possible coding redundancy of a separate information message.
6 dwg
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