The invention relates to a rotary electric machine (10) including at least: a first stator circuit (20) capable of driving a rotor and including at least one first winding, a first control means (24) being capable of controlling the first stator circuit (20) so as to drive the rotor; a second stator circuit (30) capable of driving said rotor and including a second winding; a second control means (34) capable of controlling the second stator circuit (30) separately from the first stator circuit (20) according to an instruction (C3); and generating means (35) for generating the instruction (C3), said instruction comprising a random or pseudo-random component so as to widen the spectrum of the magnetic field produced by the first and second windings and reduce the acoustic disturbances of the electric machine (10).