CPC H04R 7/04 (2013.01) | 1 Claim |
1. A device for emission of a transverse acoustic wave in a gas environment comprising:
a case in the form of a support frame,
a flat rectangular membrane fixed to the support frame, said rectangular membrane having four corners and four sides,
a drive for acoustic vibrations of the transverse acoustic wave comprising at least one acoustic vibration exciter having a magnetic circuit including ferrite parts,
wherein the membrane comprises first and second surface layers glued to respective first and second sides of a honeycomb layer, and a stabilizing impregnating composition based on polyurethane primers and varnishes covering the surface layers,
wherein the at least one acoustic vibration exciter has a moveable end attached to the flat membrane within a special line passing along a plane of the rectangular membrane, emerging from a first one of the corners of the rectangular membrane, and ending at a point on the membrane side opposite to the first one of the corners located at a distance of ⅔ between the corner opposite to the first one of the corners, and another one of the corners.
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