Adjustable Baffle Loudspeaker for Directional Control
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Solution Overview
Problem
Current loudspeakers either lack the directional control of directional loudspeakers or the uniform coverage of omnidirectional loudspeakers, failing to achieve both advantages simultaneously.
Innovation Solution
A loudspeaker design incorporating a housing, speaker unit, conical sound-reflecting component, and a baffle assembly with moveable first and second baffle plates that adjust the angle between them, allowing for the directivity to be adjusted between omnidirectional and directional modes by changing the shape of the sound pressure adjustment area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional omnidirectional loudspeaker is used, then uniform sound coverage in all directions is achieved, but the advantages of directional control are discarded
Solution Approach 1:
The baffle assembly is designed to be movable relative to the conical sound-reflecting component, allowing the angle between first and second baffle plates to be dynamically adjusted. This enables the loudspeaker to switch between omnidirectional mode (baffle assembly in initial position) and directional mode (baffle assembly in adjusted position), resolving the contradiction between uniform coverage and directional control adaptability.
2Adaptability or versatility
If a conventional directional loudspeaker is used, then directional control is achieved, but uniform sound coverage in all directions cannot be achieved
Solution Approach 1:
The loudspeaker system is designed to perform multiple functions through a single adjustable configuration. The baffle assembly can be positioned to provide either omnidirectional sound distribution or directional sound projection, making the device universal enough to handle different application scenarios (uniform coverage requirements vs. directional control requirements) without needing separate dedicated devices.
3Adaptability or versatility
If the angle between first baffle plate and second baffle plate is changed, then directivity is adjusted, but the structure becomes more complex
Solution Approach 1:
The baffle assembly is segmented into first and second baffle plates that can move independently relative to each other and to the conical sound-reflecting component. This segmentation allows for simplified individual component design and easier adjustment mechanisms compared to a monolithic baffle structure, reducing overall device complexity while maintaining directivity adjustment capability.
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
Enables the loudspeaker to switch between directional and omnidirectional modes, providing enhanced directivity and uniform sound coverage depending on the application environment, thereby offering both advantages of existing loudspeaker types.
Implementation Method 1
The sound-reflecting component is located in the housing and has a conical surface. The sound outputting side of the speaker unit faces toward the conical surface.
Data Source
AI summary
The disclosure relates to a sound propagating device including a sound-reflecting component, a first baffle plate, a second baffle plate, and a baffle assembly. The sound-reflecting component has a conical surface. The first baffle plate and the second baffle plate are respectively connected to two opposite ends of the baffle assembly. The first baffle plate, the second baffle plate, and the baffle assembly are moveably located on the conical surface. An angle between the first baffle plate and the second baffle plate is changed when at least one of the first baffle plate and the second baffle plate is moved. In addition, the disclosure also relates to a loudspeaker having the sound propagating device.