A resonator device comprises a plurality of transducers fitted and
spatially aligned on the four prongs of two tuning forks, with vibrating
masses, placed side-by-side with the four prongs arranged at 90.degree.
angles one from the other in a clockwise or anticlockwise direction, the
distance between the individual prongs, their dimensions, shapes and
masses, producing mechanical vibrations and resonances at predetermined
frequencies.