FIELD: hydroacoustic equipment. SUBSTANCE: device has front and back surfaces which provide sound reflection. Goal of invention is achieved by introduced additional reflecting surface, which is located inside screen and is designed as reinforcing layer. Required impedance value of this layer is achieved by means of shock absorbers, which have respective resonance frequency and are mounted on both sides of layer to achieve sufficient concentration. EFFECT: increased efficiency. dwg
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Authors
Dates
2000-05-27—Published
1998-08-07—Filed