Loudspeaker arrangement

Patent metadata

Field	Value
Publication number	US-12413898-B2
Application number	US-202318486434-A
Country	US
Kind code	B2
Filing date	Oct 13, 2023
Priority date	Apr 16, 2021
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A loudspeaker arrangement ( 800 ) having first and second loudspeakers mechanically coupled to each other. Either a first side of a first sound radiating surface faces a first side of a second sound radiating surface, and the first side of the first sound radiating surface and the first side of the second sound radiating surface both face a first cavity having a first opening facing towards an internal air volume, or a second side of the first sound radiating surface faces a second side of the second sound radiating surface, the first side of the first sound radiating surface faces a second cavity having a second opening facing towards the internal air volume, and the first side of the second sound radiating surface faces a third cavity separate and distinct from the second cavity, the third cavity has a third opening facing towards the internal air volume.

First claim

The invention claimed is:

1. A loudspeaker arrangement comprising:
a first loudspeaker having a first sound radiating surface;
a second loudspeaker having a second sound radiating surface;
an enclosure ( 734 , 834 );
the first loudspeaker is mechanically coupled to the second loudspeaker;
the enclosure encloses the second side of the first sound radiating surface and the second side of the second sound radiating surface;
the enclosure has a port coupling a back cavity inside the enclosure to outside air; and
either a first side of the first sound radiating surface faces a first side of the second sound radiating surface, and the first side of the first sound radiating surface and the first side of the second sound radiating surface both face a first cavity, the first cavity has a first opening facing towards an internal air volume; or
a second side of the first sound radiating surface faces a second side of the second sound radiating surface, the first side of the first sound radiating surface faces a second cavity, the second cavity has a second opening ( 832 a ) facing towards the internal air volume, and the first side of the second sound radiating surface faces a third cavity separate and distinct from the second cavity, the third cavity has a third opening facing towards the internal air volume.

2. The loudspeaker arrangement of claim 1 , wherein the sound radiating surface of the first loudspeaker is arranged parallel to the sound radiating surface of the second loudspeaker.

3. The loudspeaker arrangement of claim 1 , further comprising at least one additional loudspeaker having a third sound radiating surface;
either a first side of the third sound radiating surface faces the first sides of the first sound radiating surface and the second sound radiating surface, and faces the first cavity (; or
a second side of the third sound radiating surface faces the second sides of the first sound radiating surface and the second sound radiating surface, and faces a fifth cavity separate and distinct from the first cavity and the second cavity, the fifth cavity has a fifth opening facing towards the internal air volume.

4. The loudspeaker arrangement of claim 1 , wherein;
the loudspeaker arrangement has an even number of loudspeakers;
two loudspeakers together form a pair of loudspeakers;
the pairs of loudspeakers are arranged in one row; and
either a first side of the sound radiating surface of each of the loudspeakers in the pair of loudspeakers faces the first cavity; or
a first side of a sound radiating surface of a first loudspeaker of each pair of loudspeakers faces the second cavity, and a first side of a sound radiating surface of a second loudspeaker of each pair of loudspeakers faces the third cavity.

5. The loudspeaker arrangement of claim 1 , further comprising a cover configured to close the enclosure towards the internal air volume.

6. The loudspeaker arrangement of claim 5 , wherein;
either the cover has an opening aligned with the first opening of the first cavity; or
the cover has two openings each of the two openings of the cover is aligned with a different one of the second opening of the second cavity and the third opening of the third cavity.

7. The loudspeaker arrangement of claim 5 , wherein;
either the cover forms a part of a panel in the interior of a vehicle; or the cover forms a part of a wall in a room.

8. The loudspeaker arrangement of claim 1 , wherein;
either the first opening is covered with a fabric or mesh; or
the second opening and the third opening are covered with a fabric or mesh.

9. The loudspeaker arrangement of claim 1 , wherein the first loudspeaker has a first speaker basket, the second loudspeaker has a second speaker basket, and the first speaker basket is mechanically coupled to the second speaker basket.

10. The loudspeaker arrangement of claim 9 , further comprising a plurality of first connection elements and a plurality of second connection elements configured to connect the first speaker basket to the second speaker basket.

11. The loudspeaker arrangement of claim 9 , wherein the first speaker basket and the second speaker basket are glued together.

12. The loudspeaker arrangement of claim 9 , wherein;
a first side of the first sound radiating surface faces a first side of the second sound radiating surface, and the first side of the first sound radiating surface and the first side of the second sound radiating surface both face a first cavity, the first cavity has a first opening facing towards an internal air volume;
the first speaker basket has a first projection extending from the first speaker basket in a first direction (y) towards the second loudspeaker;
the second speaker basket has a second projection extending from the second speaker basket in the first direction (y) towards the first loudspeaker; and
the first projection is mechanically coupled to the second projection defining the first cavity between a front side of the first loudspeaker and a front side of the second loudspeaker.

13. The loudspeaker arrangement of claim 12 , wherein;
the first projection and the second projection are omitted in a second direction (z) that is perpendicular to the first direction (y), in order to form the first opening.

14. The loudspeaker arrangement of claim 1 , wherein;
either the first opening has a rectangular cross-section with rounded corners, a square cross-section, a rectangular cross-section, a rounded cross-section, or an oval cross-section; or
each of the second opening and the third opening has a rectangular cross-section with rounded corners, a square cross-section, a rectangular cross-section, a rounded cross-section, or an oval cross-section.

15. The loudspeaker arrangement of claim 1 , wherein the loudspeaker arrangement is mounted to a panel of a vehicle, the panel separating the internal air volume from outside air.

Assignees

• Harman Becker Automotive Systems Gmbh

Inventors

• Gontcharov Vladimir
• Lahti Hans Erik Otto
• Sterling Brian

Classifications

• H04R2499/13

  Acoustic transducers and sound field adaptation in vehicles · CPC title

• H04R1/025 Primary

  Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture · CPC title

• H04R2201/021

  Transducers or their casings adapted for mounting in or to a wall or ceiling · CPC title

• H04R1/2888

  for loudspeaker transducers · CPC title

• H04R1/2857

  for loudspeaker transducers · CPC title