Loudspeaker Box Sound-Guide Device Front Slot
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional loudspeaker systems face challenges in achieving uniform sound propagation and minimizing sound energy dispersal away from the intended listening area, leading to inhomogeneous sound fields and inefficient sound distribution.
Innovation Solution
A loudspeaker box design featuring a device for sound guidance with a front slot divided into chambers, arranged vertically and horizontally, and a rear surface matching the loudspeaker membrane for uniform sound coupling, combined with damping elements and rounded edges to optimize sound propagation and reduce standing waves, and a column configuration for enhanced sound distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional loudspeaker systems are used, then sound is radiated in all directions, but sound energy disperses away from the listening area resulting in inhomogeneous sound fields
Solution Approach 1:
The front slot is divided into multiple chambers by longitudinal and/or transverse ribs, creating segmented sound radiation paths. Each chamber can have different sound travel times, allowing phase-coherent sound radiation and uniform wavefront formation in the vertical direction while maintaining directional control
Solution Approach 2:
The patent transitions from conventional omnidirectional sound radiation to directional sound propagation by shaping the sound wave into a cylindrical wavefront. The vertical slot configuration and chamber segmentation create controlled sound paths that direct energy forward rather than allowing dispersion in all directions
2Power
If the front slot width is increased to improve sound radiation, then more sound energy is radiated, but the cylindrical wavefront quality deteriorates
Solution Approach 1:
The patent specifies an optimized slot width range of 10-30 mm (preferably 15-25 mm, especially 20 mm) to maintain the cylindrical wavefront shape while achieving sufficient sound radiation power. This parameter optimization balances wavefront quality with acoustic output
3Manufacturing precision
If the distance between the loudspeaker and sound-guiding device is reduced to improve coupling, then sound coupling improves, but the loudspeaker diaphragm may abut the device at maximum excursion
Solution Approach 1:
The rear surface of the sound-guiding device is formed as a negative imprint of the loudspeaker diaphragm, creating a curved surface that matches the diaphragm's shape. This allows uniform coupling distance while accommodating diaphragm excursion without abutment
Solution Approach 2:
The patent optimizes the distance between the loudspeaker diaphragm and sound-guiding device to be less than 10 mm (particularly less than 5 mm, and especially less than 2 mm), balancing coupling efficiency with clearance for maximum diaphragm excursion
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 design generates an almost ideal cylindrical wavefront, ensuring uniform sound coverage in both horizontal and vertical directions, reducing sound dispersal and creating a homogeneous sound field with improved sound radiation and reduced standing waves.
Implementation Method 1
a sound-guiding device (14), wherein the sound-guiding device is arranged in front of the loudspeaker in a sound propagation direction
Implementation Method 2
in the horizontal direction perpendicular to the loudspeaker box, diffraction effects at the front slot deflect the radiated sound waves outwards
Implementation Method 3
the rear surface of the sound-guiding device facing the loudspeaker is formed, at least in part, as a negative imprint of the loudspeaker and/or the loudspeaker diaphragm
Implementation Method 4
combined with damping elements and rounded edges to optimize sound propagation and reduce standing waves
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a loudspeaker box (12) comprising a housing (20), a loudspeaker (22) arranged in the housing (20) for generating sound, and a sound-guide device (14), wherein the sound-guide device (14) is arranged in front of the loudspeaker (22) in a sound propagation direction (25), wherein the sound-guide device (14) is configured in such a way that the sound-guide device (14) guides the sound generated by the loudspeaker (22) to a front slot (30) arranged on a front side (27) of the sound-guide device (14) for the purposes of sound radiation. The invention also relates to a column loudspeaker box (10) comprising at least two loudspeaker boxes (12) arranged above one another.