FIELD: radio engineering, communication.
SUBSTANCE: device for generating a signal with an improved range comprises: a calculator to calculate a value, which describes the energy distribution on the frequency in the main signal; and a signal generator for generating expansion signal comprising a frequency band expansion is not included in the main signal from the main signal. A signal generator configured to generate extension signal or the main signal so that the spectral envelope of the extension signal or the main signal dependent on the value describing the distribution of energy versus frequency in the main signal.
EFFECT: reduction in the required amount of side information as compared with full parametric description of the missing frequencies.
17 cl, 18 dwg
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