Arcuate Loudspeaker Driver Array for Time-Aligned Sound
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional loudspeaker designs often fail to achieve optimal sound quality due to varying directivity of speaker drivers, leading to differing on-axis and off-axis responses, especially at higher frequencies, which can negatively impact the listening experience.
Innovation Solution
A novel loudspeaker design featuring a plurality of speaker drivers arranged in an arcuate or sinusoidal pattern, with time-alignment and delayed sound delivery to maximize constructive interference and create a desired sound effect, such as a progressive kick, by using individual amplifiers with time delays and varying placement depths to ensure uniform sound arrival at the listening position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If speaker drivers are arranged in traditional linear or clustered configurations, then the structure is simple and easy to manufacture, but the directivity varies significantly between on-axis and off-axis positions, degrading sound quality
Solution Approach 1:
The patent applies curvature by arranging speaker drivers along an arcuate (curved) configuration rather than a linear arrangement. This curved geometry is specifically designed to redirect sound waves from off-axis positions toward the listening area, reducing variations in directivity between on-axis and off-axis listeners while maintaining consistent sound quality across different listening positions.
2Reliability
If multiple speaker drivers are used to improve sound quality and frequency response, then audio fidelity is enhanced, but the device complexity and structural design become more difficult
Solution Approach 1:
The patent segments the speaker system into multiple independent driver units (including tweeters, mid-range drivers, and woofers) arranged along the arcuate structure. Each driver can be independently positioned and tuned, allowing for optimized frequency response and sound quality while the modular segmented approach actually simplifies the overall design process compared to attempting to achieve similar performance with fewer, more complex drivers.
3Reliability
If speaker drivers are positioned at different depths to achieve time alignment, then sound quality is improved through constructive interference, but the manufacturing precision requirements increase
Solution Approach 1:
The patent implements preliminary action by pre-calculating and pre-positioning each speaker driver at a specific depth along the arcuate structure during the design and manufacturing phase. The arcuate geometry itself is designed to provide the necessary time alignment, with drivers positioned at predetermined depths that automatically achieve constructive interference at the intended listening position, eliminating the need for complex post-manufacturing adjustments.
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 enhances sound quality by achieving time-aligned or progressively delayed sound waves, improving the listening experience by maximizing constructive interference and maintaining a consistent sound effect across the frequency spectrum, even in large environments or near-field monitoring setups.
Implementation Method 1
achieve time alignment of a sound signal produced by each of the first plurality of substantially similar speaker drivers at a listening position
Implementation Method 2
sound signal produced by each of the first plurality of substantially similar speaker drivers
Data Source
AI summary
A loudspeaker in which a plurality of speaker drivers is jointly tasked with reproducing sounds. The plurality of speaker drivers is arranged on the loudspeaker so as to achieve a desired sound effect at a listening position. The plurality of speaker drivers is arranged in an arcuate arrangement or in a sinusoidal arrangement. The desired sound effect may be facilitated or enhanced by modifying the timing of sounds emanated from each of the plurality of speaker drivers. Alternatively, sounds may be sent to each of the plurality of speaker drivers substantially simultaneously. The sound effect achieved may be a time-alignment effect such that the sound arriving at the listening position is time-aligned to maximize constructive interference between the various speaker drivers of the plurality of speaker drivers. Alternatively, the sound effect achieved by other implementations may be a progressive kick in sound waves moving along the arcuate or sinusoidal arrangement.