Method for generating a relay switching noise electromechanical

In order to generate an electromechanical relay switching noise in a vehicle, it excites an electro-acoustic transducer (4) with an excitation circuit (1) producing a plurality of diverse signals frequencies (131-134) and controls the drive circuit (1) for generating the various signals one after the other and at a sufficiently high rate so that each frequency restituted by the transducer (4) is interrupted before that it becomes a footnote.