Modular acoustic horns and horn arrays

Patent metadata

Field	Value
Publication number	US-9894432-B2
Application number	US-201615255358-A
Country	US
Kind code	B2
Filing date	Sep 2, 2016
Priority date	Oct 6, 2010
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A modular horn type loudspeaker and a modular horn array formed of modular loudspeakers. An acoustic horn includes a first acoustic module. The first acoustic module includes a first acoustic driver and a first acoustic duct, for conducting acoustic energy from the first acoustic driver. The first acoustic duct has a first opening through which acoustic energy is radiated. The first acoustic duct is characterized by a first centerline. A second acoustic module includes a second acoustic driver and a second acoustic duct, for conducting acoustic energy from the acoustic driver. The second acoustic duct has a second opening through which acoustic energy is radiated. The second acoustic duct is characterized by a second centerline.

First claim

What is claimed is:

1. A loudspeaker comprising:
a horn comprising a first end panel, a second end panel, a first side wall, and a second side wall, edges of at least the first and second side walls defining a diffraction slot opening; and
a plurality of electro-acoustic transducers configured to be coupled to the diffraction slot opening,
wherein the horn has configurable vertical and horizontal dispersion angles, wherein the vertical angle is determined by a curvature of the diffraction slot opening and the horizontal angle is determined by an angle of the side walls from the diffraction slot opening; and
wherein the plurality of electro-acoustic transducers are coupled to the diffraction slot opening via a plurality of manifold components, each manifold component comprising at least one acoustic passage and an output opening coupled to the diffraction slot opening, the output openings of the plurality of manifold components together constituting a diffraction slot source at the diffraction slot opening, and wherein each electro-acoustic transducer is coupled to an input opening of one of the manifold components.

2. The loudspeaker of claim 1 , wherein each manifold component comprises two acoustic passages and two input openings, each of the acoustic passages having a first end at a different one of the two input openings and a second end at the output opening, and wherein the acoustic passages each curve away from the output opening in different directions, such that the two input openings are located near opposite sides of the horn.

3. The loudspeaker of claim 1 , wherein each manifold component comprises one input opening and one acoustic passage having a first end at the input opening and a second end at the output opening, wherein the acoustic passage of each manifold component curves away from the output opening in a direction opposite that of a neighboring manifold components' acoustic passages, such that the input opening is located near an opposite side of the horn from the neighboring manifold components' input openings.

4. The loudspeaker of claim 1 , wherein at least one of the first and second end panels is asymmetric about at least one axis.

5. The loudspeaker of claim 1 , wherein at least one of a depth and width of the horn varies along a height of the horn.

6. The loudspeaker of claim 1 , wherein varying the curvature of a diffraction slot opening along a length of the diffraction slot opening results in a vertical dispersion angle for the horn that varies along the length of the diffraction slot opening.

7. A loudspeaker comprising:
a horn comprising a first end panel, a second end panel, a first side wall, and a second side wall, edges of at least the first and second side walls defining a diffraction slot opening; and
a plurality of electro-acoustic transducers configured to be coupled to the diffraction slot opening,
wherein the side walls of the horn vary in at least one of length, width, curvature and placement angle; and
wherein the plurality of electro-acoustic transducers are coupled to the diffraction slot opening via a plurality of manifold components, each manifold component comprising at least one acoustic passage and an output opening coupled to the diffraction slot opening, the output openings of the plurality of manifold components together constituting a diffraction slot source at the diffraction slot opening, and wherein each electro-acoustic transducer is coupled to an input opening of one of the manifold components.

8. The loudspeaker of claim 7 , wherein each manifold component comprises two acoustic passages and two input openings, each of the acoustic passages having a first end at a different one of the two input openings and a second end at the output opening, and wherein the acoustic passages each curve away from the output opening in different directions, such that the two input openings are located near opposite sides of the horn.

9. The loudspeaker of claim 7 , wherein each manifold component comprises one input opening and one acoustic passage having a first end at the input opening and a second end at the output opening, wherein the acoustic passage of each manifold component curves away from the output opening in a direction opposite that of a neighboring manifold components' acoustic passages, such that the input opening is located near an opposite side of the horn from the neighboring manifold components' input openings.

10. The loudspeaker of claim 7 , wherein at least one of the first and second end panels is asymmetric about at least one axis.

11. The loudspeaker of claim 7 , wherein at least one of a depth and width of the horn varies along a height of the horn.

12. The loudspeaker of claim 7 , wherein varying the curvature of a diffraction slot opening along a length of the diffraction slot opening results in a vertical dispersion angle for the horn that varies along the length of the diffraction slot opening.

13. A loudspeaker comprising:
a horn comprising a first end panel, a second end panel, a first side wall, and a second side wall, edges of at least the first and second side walls defining a diffraction slot opening; and
a plurality of electro-acoustic transducers configured to be coupled to the diffraction slot opening,
wherein the horn has a shape that is asymmetric about at least one axis; and
wherein the plurality of electro-acoustic transducers are coupled to the diffraction slot opening via a plurality of manifold components, each manifold component comprising at least one acoustic passage and an output opening coupled to the diffraction slot opening, the output openings of the plurality of manifold components together constituting a diffraction slot source at the diffraction slot opening, and wherein each electro-acoustic transducer is coupled to an input opening of one of the manifold components.

14. The loudspeaker of claim 13 , wherein each manifold component comprises two acoustic passages and two input openings, each of the acoustic passages having a first end at a different one of the two input openings and a second end at the output opening, and wherein the acoustic passages each curve away from the output opening in different directions, such that the two input openings are located near opposite sides of the horn.

15. The loudspeaker of claim 13 , wherein each manifold component comprises one input opening and one acoustic passage having a first end at the input opening and a second end at the output opening, wherein the acoustic passage of each manifold component curves away from the output opening in a direction opposite that of a neighboring manifold components' acoustic passages, such that the input opening is located near an opposite side of the horn from the neighboring manifold components' input openings.

16. The loudspeaker of claim 13 , wherein at least one of the first and second end panels is asymmetric about at least one axis.

17. The loudspeaker of claim 13 , wherein at least one of a depth and width of the horn varies along a height of the horn.

18. The loudspeaker of claim 13 , wherein varying the curvature of a diffraction slot opening along a length of the diffraction slot opening results in a vertical dispersion angle for the horn that varies along the length of the diffraction slot opening.

19. A loudspeaker comprising:
a horn comprising a first end panel, a second end panel, a first side wall, and a second side wall, edges of at least the first and second side walls defining a diffraction slot opening; and
a plurality of electro-acoustic t

Assignees

• Bose Corp

Inventors

• Blore David Edwards
• Fidlin Paul F
• Hayashi Soichiro
• Macdonald Thomas E
• Santoro Peter C

Classifications

• H04R1/403

  loud-speakers · CPC title

• H04R1/345

  for loudspeakers · CPC title

• G10K11/025

  horns for impedance matching (see provisionally also G10K11/28) · CPC title

• G10K11/26

  Sound-focusing or directing, e.g. scanning · CPC title

• H04R2400/13

  Use or details of compression drivers · CPC title