METHOD AND ACOUSTIC TRANSDUCER FOR ELECTRONIC GENERATION OF DIRECTIVITY PATTERN FOR ACOUSTIC SIGNALS Russian patent published in 2002 - IPC

FIELD: acoustics; beam generation by acoustic signals. SUBSTANCE: predetermined gain characteristic between received electric signal S_r and acoustic signals depending on direction (θ) wherefrom mentioned acoustic signals arrive at two acoustical- electrical transducers 1, 2 spaced apart are shaped so that repeated relatively delayed signal (A₁₀) is found from output signals of transducers and in compliance with assumed transducer delay. In the process one (S₁) out of output signals is filtered off so that transient characteristic of filtration is controlled depending on relatively delayed signal (A₁₂). Output filtration signal 14 is used as received electric signal (S_r). EFFECT: improved frequency response, reduced size, enhanced signal-to-noise ratio. 30 cl, 26 dwg, 1 tbl