PURPOSE: To obtain a slip oscillation differential acoustic transducer capable of transmission of high fidelity and reception of high sensitivity.

CONSTITUTION: Piezoelectric oscillators 1A to 1F which consist piezoelectric ceramics formed to rectangular parallelepipeds and are polarized in the direction of height by electrodes provided on both sides with electric polarities equalized, plural T-shaped sound reception plates 2A to 2D which are made of an elastic body and have side end faces and wave sensing faces, lead wires 6A, 6A', 6B, and 6B' which electrically connect respective electrodes of piezoelectric oscillators 1B and 1E relatively placed in center parts out of piezoelectric oscillators 1A to 1F, and buffer materials 3A, 4A, 3B, and 4B which are interposed between combinational bodies and storage grooves provided in an enclosure 5 and give the slip oscillation in the perpendicular direction of piezoelectric oscillators 1A to 1F are provided to constitute the slip oscillation differential acoustic transducer.