DIRECTIONAL MULTI-CHANNEL ACOUSTIC SYSTEM WITH WAVEGUIDE Russian patent published in 2023 - IPC H04R1/34 H04R1/02 H04R1/24 H04R1/28 

FIELD: acoustic systems.

SUBSTANCE: loudspeaker enclosure includes a front, sides and a back to define the internal volume. Moreover, the front part is made in form of a waveguide surface, contains at least one driver within the waveguide surface, and is configured to emit the main acoustic energy of the acoustic system in the direction of the first acoustic axis. At least one additional speaker driver is fixed inside the case, so that a sub-volume is formed inside the internal volume, bounded by the driver, separators between the driver and the front part, and the front part of the case. At least one first slot of the acoustic system opens from the sub-volume into the outer volume either towards the side part or the rear part of the acoustic system case. At least one acoustic system resonator contains at least one cavity acoustically connected to the sub-volume. Moreover, the resonator is tuned to at least one of the undesirable resonant frequencies of the sub-volume. The resonator is made in form of a separate block of resonators connected to the acoustic system case.

EFFECT: increasing the directed concentration of the radiation of sound energy

19 cl, 19 dwg