FIELD: instrument making.
SUBSTANCE: in a method of exciting a resonator which has a resonant frequency, resonator in a first slot is excited at a first frequency which is different from resonant frequency by first frequency difference. During second time interval, resonator is excited with a second frequency which is different from resonant frequency by second frequency difference. First frequency difference and second frequency difference have different signs.
EFFECT: also, value of first frequency difference and second frequency difference differ by less than 10 % of greater value.
27 cl, 5 dwg
