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A device for generating dispersed sound waves

A sound wave and equipment technology, which is applied in the field of equipment that generates dispersed sound waves, can solve problems such as low dispersion, unsuitability, and poorly defined sound source positions, and achieve high sound pressure levels and large dispersion angles.

Inactive Publication Date: 2008-06-04
里夫·卡尔森
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The problem with the currently shown schemes is that they have less dispersion in the vertical plane than in the horizontal pla

Method used

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  • A device for generating dispersed sound waves
  • A device for generating dispersed sound waves
  • A device for generating dispersed sound waves

Examples

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Embodiment Construction

[0037] Figure 1 shows a device 1 for generating dispersive sound waves according to a first embodiment of the invention. The device includes a sound generator 2 for generating and emitting sound waves. In this embodiment, the sound wave generator is an electrostatic transmitter. The device also includes a scattering unit 3 with a parabolic surface 4 . The sound wave generator 2 and the scattering unit 3 are arranged such that the sound waves generated are reflected at the parabolic surface 4 and concentrated at the focal point 5 of the parabolic surface. In this embodiment, the sound wave generator 2 is provided with openings 6 arranged so that reflected sound waves can leave the device and be distributed to the surroundings.

[0038] The shape of the parabolic surface is chosen so that its focus is at or near the opening 6 . The sound generator 2 is disk-shaped and has a two-dimensional extension in a direction perpendicular to the axis of symmetry of the parabolic surface...

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Abstract

The present invention relates to a device (1) for producing dispersed sound waves comprising a sound-wave generator (2) for producing and emitting sound waves. The device further comprises: a scattering unit (3) having an surface (4) of a parabolic shape. The sound-wave generator and the scattering unit are arranged such that the generated sound waves are reflected in said parabolic surface, and the device further comprises an opening (6) arranged such that the reflected sound waves are allowed to leave the device and be distributed to the surroundings.

Description

technical field [0001] The invention relates to a device for generating dispersive sound waves. [0002] Such devices are useful in applications such as loudspeakers or position detectors that require sound waves with a large dispersion angle. The invention is particularly useful for determining the position of moving points within a room. [0003] The invention also relates to a device for determining a position in a room comprising a device according to the invention for generating dispersed sound waves. Background technique [0004] Sound waves can be generated, for example, by a point sound source or by a planar sound source. A point sound source radiates sound waves uniformly in all directions. The sound spreads spherically. The effect of sound waves at a certain distance from the sound source, the sound pressure level, will depend on the surface area of ​​the sphere, the distance from the sound source, and the frequency of the sound source. Due to the difficulty i...

Claims

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Application Information

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IPC IPC(8): H04R1/32H04R19/01G01S5/22
CPCH04R1/345G01S5/30H04R19/02G01S1/74G01S11/16G01S1/753G01S1/751
Inventor 里夫·卡尔森
Owner 里夫·卡尔森