Vibromassage unit for applying a massage action on at least a part of a user's body, the vibrating unit comprising: - a resonant structure (1, 101), - an audio signal source (10) designed to generate a audio signal, - a means for generating vibrations on said resonant structure (1, 101), the means comprising generating vibrations comprising at least one acoustic transducer (20) designed to generate vibrations having a frequency and amplitude modulated on the basis of said audio signal, said transducer (20) being in contact with said resonant structure (1, 101) at a predetermined point, characterized in that the resonant structure (1, 101) is configured such that said vibrations of a differentiated way, selectively concentrating the vibrations according to their frequency and their amplitude in certain areas, thus obtaining a selective distribution of vibration ion.
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