FIELD: physics.
SUBSTANCE: acoustic system comprises a high-frequency acoustic transducer and a mid-frequency acoustic transducer, adjustable flaps acting on the acoustic radiation of the high-frequency acoustic transducer to obtain the directionality of the sound emission of the high-frequency acoustic transducer in the selected angular sector, with the mid-frequency acoustic transducer and the high-frequency acoustic transducer radiating in the general frequency range, and contains a digital signal processor acting on the signal intended for the high-frequency acoustic transducer and on the signal intended for the mid-frequency acoustic transducer in such a way that the amplitude and the phase change in the overall frequency range in order to obtain the directivity of the sound emission for a pair consisting of the high-frequency acoustic transducer and the mid-frequency acoustic transducer in the same selected angular sector as the direction provided by the adjustable flaps.
EFFECT: increasing the sound directionality.
29 cl, 2 dwg, 1 tbl
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