Line Array Loudspeaker Non-Parallel Driver Planes
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Solution Overview
Problem
Conventional line array loudspeakers face limitations in achieving optimal energy distribution and dispersion patterns, particularly at higher frequencies, leading to uneven sound coverage across audiences due to parallel axes and fixed orientations.
Innovation Solution
The arrangement of acoustic drivers in non-parallel planes with specific angular intersections and interleaving configurations allows for improved horizontal and vertical dispersion, enabling flexible orientations and enhanced frequency response by aligning dust caps and adjusting driver angles (θ and ϕ) to minimize on-axis phase shifts and maximize radiation patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If acoustic drivers are arranged with parallel axes in conventional line arrays, then the structure is simple and easy to manufacture, but the energy distribution and dispersion patterns become uneven particularly at higher frequencies
Solution Approach 1:
The patent applies asymmetry by arranging acoustic drivers in non-parallel planes with specific angular intersections. The first plane intersects the second plane along a straight line at defined angles, creating an asymmetric configuration that optimizes dispersion patterns and energy distribution, particularly at higher frequencies, while maintaining manufacturability through standardized angular relationships.
2Manufacturing precision
If acoustic drivers are arranged in non-parallel planes with specific angular intersections, then the dispersion patterns and energy distribution are optimized, but the structural complexity increases
Solution Approach 1:
The patent segments the acoustic driver array into multiple distinct planes (first plane, second plane, third plane) with defined angular relationships. Each plane contains specific drivers arranged at particular angles, allowing independent optimization of each segment while maintaining overall system coherence through the intersecting plane geometry.
Solution Approach 2:
The patent transitions from a conventional single-plane or parallel-axis arrangement to a multi-plane three-dimensional configuration. By introducing angular intersections between planes and arranging drivers along a straight line that passes through multiple planes, the system utilizes additional spatial dimensions to achieve superior dispersion and energy distribution.
3Manufacturing precision
If drivers are arranged to maximize high-frequency radiation uniformity, then sound coverage is improved, but the number of drivers and structural elements increases
Solution Approach 1:
The patent optimizes the angular parameters of driver arrangement, specifically the angles at which planes intersect and the orientations of drivers within those planes. By carefully selecting these geometric parameters, the system achieves uniform high-frequency radiation and improved sound coverage while minimizing the number of drivers required compared to conventional arrangements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration results in broader and more uniform sound distribution, ensuring consistent high-frequency radiation across the audience, reducing the need for additional low-frequency speakers and minimizing visual distractions in installations.
Implementation Method 1
The first plurality of acoustic drivers and the second plurality of acoustic drivers may be constructed and arranged to radiate pressure waves in a first frequency band
Implementation Method 2
providing a tightly controlled energy distribution pattern in a horizontal or vertical plane over a broad frequency range
Data Source
Figure 1~2D
Figure 3
Figure 4~5D
AI summary
A line array loudspeaker, including a first plurality of acoustic drivers each acoustic driver comprising an axis, the first plurality of acoustic drivers arranged so that the axes of first plurality of acoustic drivers are coplanar in a first plane and so that a straight line intersects each axis at a same position on each of the first plurality of acoustic drivers, and a second plurality of acoustic drivers each acoustic driver comprising an axis, the second plurality of acoustic drivers arranged so that the axes of second plurality of acoustic drivers are coplanar in a second plane and so that the straight line intersects each axis at a same position on each of the second plurality of acoustic drivers, in which the first plurality and the second plurality arranged so that the first plane intersects with the second plane along a straight intersection line.