METHOD FOR CORRECTING AXIS DIRECTION OF REFLECTIVE SONIC RECEIVER TO VISUALALLY DIFFICULTLY OBSERVED OR UNDISCLOSED SOUND SOURCES Russian patent published in 2018 - IPC H04R3/00 G01S3/805 H04R1/34 

FIELD: physics.

SUBSTANCE: method for correcting the axis direction of the reflective sonic receiver includes the operation of receiving a sound by a parabolic reflector in the focus of which a directional microphone is placed. To the rim of the reflector with a diameter D_ref the rod is rigidly attached, on which two additional microphones are symmetrically installed, the distance between which is changed in accordance with the inequality L₁<D_ref<L₂, the output signals from these microphones are connected to the inputs of the summing amplifier through the resonant filters the resonant frequencies of which correspond to the inequality F₁>F_res>F₂. The output signal of the summing amplifier via a threshold device served by the registrar on which the maximum value of the signal is fixed is switched on the sound reception of the microphone placed in the focus of the reflector, and the output signal from the microphone connected through the filter with a bandwidth of 60 Hz to the amplifier, the output of which serves to the receiver. The directional diagram of additional microphones has a maximum in the forward direction of the reflector, and the microphone in focus - in the opposite direction.

EFFECT: increasing the microphone reception level by at least 6 dB.

6 dwg, 1 tbl