Sound broadcasting system

一种声音、声音信号的技术，应用在“柱形”声音扩散系统领域

Active Publication Date: 2019-11-05
L-ACOUSTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Another limitation of the sound diffusion system is the visual integration of the system

Method used

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Embodiment Construction

[0047] A sound source S or a sound diffusing system 1 comprising a plurality of sound sources S may be characterized by a directivity diagram comprising sound pressure level (SPL) as a function of spatial position. The plot generally includes nested 3d lobes, with SPL remarkably constant within the lobes and decreasing with increasing distance from source S or device 1 . A section or projection in a horizontal plane or a vertical plane shows horizontal or vertical directivity, respectively.

[0048] Figure 1a The vertical directivity of a single sound source S (eg a horn-type point source) is shown. Point source type sound sources radiate isotropically and have spherical directivity. A pronounced conical horn can limit that directivity to a more restricted angular sector. An example of a horn point source sound source S is the applicant's product X12. The directivity of such a sound source S has an acoustic axis A connecting the source S to the maximum SPL, which approxima...

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PUM

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Abstract

The invention relates to a sound broadcasting device (1) comprising a high-frequency section (2) including at least one high-frequency acoustic source (SHF), and a medium-frequency section (3, 4) including at least two medium-frequency sources (SMF), the acoustic sources (SHF, SMF) being vertically superposed, where the medium-frequency section (3, 4) comprises a lower sub-section (3), arranged below the high-frequency section (2) and comprising at least one medium-frequency acoustic source (SMF), and an upper sub-section (4), arranged above the high-frequency section (2) and comprising at least one medium-frequency acoustic source (SMF), where the vertical directivity of the high-frequency section (2) has an incline, relative to the horizontal (H), that is substantially equal to the incline ([theta]MF) of the vertical directivity of the medium-frequency section (3, 4) relative to the horizontal (H), so that the overall vertical directivity of the device (1) has a non-zero incline ([theta]Dir) relative to the horizontal (H).

Description

technical field [0001] The present invention relates generally to the field of professional audio systems or home audio systems. The present invention is particularly directed to a "cylindrical" sound diffusion system suitable for producing high Sound Pressure Level (SPL) over long distances so as to be able to cover large audiences while maintaining high coherence / intelligibility. Background technique [0002] It is known that sound can be produced by propagating a sound signal from a sound source such as a loudspeaker, possibly with a loudspeaker, or a loudspeaker box comprising a plurality of loudspeakers and / or loudspeakers. [0003] It is also known that by using multiple sound sources within a sound diffusing device or system, it is possible to increase the range and cover a large number of listeners. If all sound sources are located at a single point, the contribution of each sound source is correctly added. In practice, this is impossible because the sound source h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/26G10K11/34H04R1/32H04R1/40
CPCG10K11/26G10K11/34H04R1/403H04R1/025H04R1/24H04R3/12
Inventor 克里斯汀·埃尔克里斯多夫·孔贝
Owner L-ACOUSTICS
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