FIELD: underwater acoustics. SUBSTANCE: method of control over energy efficiency of parametric sound transducer operating under condition of emission of wave of ultimate amplitude includes placing of layer of monoradial bubbles resonant to frequency of wave of ultimate amplitude instead of impedance boundary which is put in accordance with known method in front of transducer of pumping of impedance boundary and its irradiation with wave of ultimate amplitude. Bubbles are formed by electrolysis over surface of sound - and current - conducting plate. EFFECT: increased energy efficiency. 2 dwg
