Truncated Pyramid Speaker for Omnidirectional Sound Immersion
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Solution Overview
Problem
Existing speaker designs produce uneven sound distribution in enclosed spaces due to unidirectional acoustic energy projection, failing to utilize the acoustic properties of the room effectively for immersive sound experience.
Innovation Solution
A truncated pyramid speaker design with vertically angled sides, featuring high-range drivers at the top, mid-range drivers on the sides, and a low-range driver at the bottom, along with a deflector plate and legs, to distribute sound in multiple directions, leveraging the room's reflective surfaces for improved sound immersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If acoustic drivers are mounted in the same horizontal direction, then the speaker structure is simple and easy to manufacture, but the sound distribution becomes uneven in enclosed spaces
Solution Approach 1:
The speaker system is segmented into multiple acoustic drivers (woofers, mid-range drivers, tweeters) positioned at different locations and orientations within the cabinet. Each driver segment handles specific frequency ranges and projects sound in different directions, collectively achieving uniform omnidirectional sound distribution while maintaining manageable structural complexity
Solution Approach 2:
The patent transitions from traditional unidirectional horizontal sound projection to three-dimensional omnidirectional sound distribution. Acoustic drivers are positioned on multiple faces of the cabinet (front, rear, sides, top, bottom) to radiate sound in all spatial dimensions, transforming the sound distribution pattern from a single-direction cone to a three-dimensional spherical pattern
2Manufacturing precision
If multiple acoustic drivers are mounted to cover different frequency ranges, then the acoustic signal fidelity is improved, but the speaker structure becomes more complex
Solution Approach 1:
The cabinet structure serves multiple functions simultaneously: it provides mechanical support for drivers, acts as acoustic baffles, functions as a resonant chamber, and serves as the mounting surface for various drivers. This multi-functionality reduces the need for additional separate components, thereby managing complexity while achieving high-fidelity multi-range audio reproduction
Solution Approach 2:
Multiple acoustic drivers covering different frequency ranges (woofers for low frequencies, mid-range drivers for mid frequencies, tweeters for high frequencies) are merged into a single integrated cabinet structure. The drivers are positioned and oriented to work together as a unified system, projecting sound in coordinated directions to achieve comprehensive frequency coverage and uniform sound distribution
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
The design achieves a more uniform sound distribution throughout the space, providing total sound immersion by directing sound waves in various directions and utilizing the room's surfaces for enhanced acoustic performance.
Implementation Method 1
utilizing one or more devices comprising a conical diaphragm with a solenoid or piezoelectric device situated at the apex of the diaphragm
Implementation Method 2
utilizing one or more devices comprising a conical diaphragm with a solenoid or piezoelectric device situated at the apex of the diaphragm
Implementation Method 3
utilizing the room's reflective surfaces for improved sound immersion
Data Source
AI summary
A speaker producing total sound immersion by directing the sound in off-horizontal directions, and directing sound in different frequency ranges in different directions. The low range driver, or woofer, is oriented downward, and fitted with a dispersion plate, which deflects the sound along the floor and up into the room. The high range drivers, or tweeters, are oriented upward and set for wide dispersion, so that the high pitched sound is reflected off the ceiling and is more evenly distributed. One midrange driver is set in each side of the speaker box, and the sides are angled, so that the box is in the form of a truncated pyramid. This causes the midrange sound to be reflected off the walls and ceiling of the room. The result is one speaker producing a total sound immersion effect.