Complementary Audio Output Loudspeaker Band Allocation
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Solution Overview
Problem
The interaction between a listening space and loudspeaker radiation causes adverse effects on sound quality due to unique room responses, leading to inconsistent frequency responses across different acoustic environments.
Innovation Solution
A sound system comprising multiple loudspeakers with overlapping frequency ranges, where each speaker's response is measured, analyzed, and filtered to assign specific frequency bands, resulting in an overall flat frequency response by minimizing the impact of the listening space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple loudspeakers with overlapping frequency ranges are used, then the overall frequency response coverage is improved, but the complexity of the sound system increases
Solution Approach 1:
The frequency range is divided into multiple operating bands, with each loudspeaker assigned to specific bands based on its characteristics. This segmentation allows the system to cover a broader frequency range while managing complexity through structured frequency allocation rather than treating all frequencies uniformly.
Solution Approach 2:
Each loudspeaker is optimized for specific frequency bands rather than attempting to cover the entire spectrum. The system assigns different operating bands to different speakers based on their individual characteristics, allowing each component to perform at its best in its designated frequency range.
2Manufacturing precision
If calibration is applied to minimize room response effects, then frequency response consistency is improved, but the system requires additional measurement and processing steps
Solution Approach 1:
The system performs preliminary measurements of each loudspeaker's response in the specific listening environment before final deployment. By measuring and characterizing each speaker's interaction with the room acoustics in advance, the system can pre-calculate optimal operating band assignments that account for room-specific effects, eliminating the need for complex real-time calibration during operation.
3Object-affected harmful factors
If operating bands are assigned to minimize room response effects, then sound quality is improved, but the complexity of frequency band assignment and filter generation increases
Solution Approach 1:
The system uses measured feedback from each loudspeaker's actual response in the listening environment to determine optimal operating band assignments. By measuring the real-world performance of each speaker and using that data to guide frequency band allocation, the system automatically adapts to room-specific acoustics without requiring manual tuning or complex theoretical calculations.
Data Source
AI summary
According to an example aspect of the present invention, there is provided a sound system, the sound system comprising: a first loudspeaker, comprising at least one first speaker element, a second loudspeaker, comprising at least one second speaker element, wherein the first and second loudspeaker have at least partially overlapping frequency ranges, and the first speaker is configured to produce a response within at least one first operating band defined within the frequency range of the first speaker, and the second speaker is configured to produce a response within at least one second operating band defined within the frequency range of the second speaker, and the first and second operating bands do not overlap, and wherein the overall response of the sound system at a first location is comprised of the response within the first operating band and the response within the second operating band.