Patent ID: 7760035

Claim:
A device for transmitting a discretized noise on at least two levels, comprising: a synthesizer for producing a sampled and quantized digital noise, a transducer linked to a power supply circuit, electrical power supply sources, switches for separately incorporating each source in the power supply circuit, the sources incorporated in the power supply circuit being placed in series with one another, control means for generating control signals for each switch, in which: the synthesizer produces, by iterative digital synthesis under spectral constraint, a discretized noise sequence x′(n) having a determined power spectral density, control means apply to each switch a control signal according to the said noise sequence x′(n) produced by the synthesizer, said control signal being synchronous with the basic clock of the synthesizer, a certain number of sources being placed in series, at a time t, with the terminals of the transducer, this number being a function of the value at this time of the noise sequence produced by the synthesizer.