SOUND DISTRIBUTION DEVICE WITH CONTROLLED BROADBAND DIRECTIVITY Russian patent published in 2023 - IPC H04R1/02 

FIELD: acoustics.

SUBSTANCE: invention relates to an acoustic housing with controlled broadband directivity. The acoustic housing has a front surface, a rear surface, two first and second side surfaces, wherein said housing has a main radiation direction perpendicular to the front surface of the acoustic housing, as well as a rear radiation direction perpendicular to the rear surface of the acoustic housing. In this case, the acoustic housing contains at least one front acoustic source, configured to emit a sound flow through the front surface and having the main radiation direction of the front source, which essentially coincides with the main radiation direction of the acoustic housing. The acoustic housing also contains at least one side acoustic source oriented towards at least one side surface with the source, wherein said side surface with the source represents one and/or the other of two first and second side surfaces, wherein said side acoustic surface the source has the main direction of radiation of the side source substantially perpendicular to one and/or the other of the side surfaces. The acoustic housing also contains at least one sound waveguide located in front of at least one side acoustic source in such a way that it blocks the sound flow emitted by said side acoustic source in the main direction of radiation of the side source, and directs the sound flow emitted by said side acoustic source, in two of the first and second sets of lateral directions on either side of the main direction of radiation of the lateral source, wherein said waveguide is connected to said lateral surface to the source by connecting means. The acoustic housing also contains at least one front hole formed by the space between the specified side surface with the source and the specified sound waveguide so that it is possible for the sound flow emitted by the acoustic source to pass in directions oriented towards the hemisphere defined by the main direction of radiation, as well as at least one rear hole formed by the space between said side surface with the source and said sound waveguide so that the sound flow emitted by the side acoustic source can pass in directions oriented towards the hemisphere defined by the rear direction of radiation of the housing. The acoustic housing also contains means for blocking the sound flow redirected by the at least one waveguide in directions other than the directions in which at least one front opening and at least one rear opening passes the specified sound flow, in order to enhance the flow, emitted by these holes.

EFFECT: improving the directionality quality of product configurations, including front and side sources.

8 cl, 35 dwg