Audio System Radial Speaker Array Room Acoustics
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Solution Overview
Problem
Current sound transmission systems in hospitality settings, such as hotels and conference centers, often suffer from low quality and intelligibility due to outdated built-in systems and the use of portable speakers, which can create uneven sound distribution, safety hazards, and aesthetic issues, particularly when accommodating multiple presenters and audience participation.
Innovation Solution
An audio system featuring a radial array of microphones and speakers with a digital signal processor that automatically adjusts for different speaker voicing characteristics, compensates for room acoustics, and creates a psychoacoustic precedence effect to enhance verbal clarity and reduce background noise, while allowing for flexible microphone and speaker configurations and remote signal distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If portable speakers are used for sound reinforcement, then ease of operation and setup is improved, but sound quality and intelligibility deteriorate
Solution Approach 1:
The system divides the audio output into multiple independent channels distributed across several speakers positioned at different locations (front, rear, sides). Each speaker receives a portion of the audio signal, allowing the system to maintain portability while achieving uniform sound distribution throughout the meeting space, resolving the contradiction between ease of setup and sound quality.
Solution Approach 2:
Different speakers in the array are positioned at specific locations around the meeting space to provide localized sound reinforcement. The system accounts for varying acoustic conditions at different positions by strategically placing speakers to ensure uniform intelligibility throughout the room, improving sound quality while maintaining portable deployment.
2Ease of operation
If portable speakers are placed in the front of the room, then ease of operation is improved, but harmful factors increase due to uneven sound distribution and safety hazards
Solution Approach 1:
The audio signal is divided into multiple channels distributed to speakers positioned at the front, rear, and sides of the meeting space. This segmentation ensures that sound is not concentrated at one location but is instead distributed uniformly throughout the room, eliminating the harmful effect of uneven sound distribution while maintaining easy portable deployment.
Solution Approach 2:
The system transitions from a single-point sound source (front speakers only) to a three-dimensional audio distribution arrangement with speakers positioned at multiple spatial locations. This dimensional expansion creates uniform sound coverage throughout the meeting space, eliminating dead zones and excessive sound levels at specific positions.
3Manufacturing precision
If ceiling speaker arrays are installed for high-quality sound reinforcement, then sound quality and intelligibility are improved, but device complexity and installation difficulty increase
Solution Approach 1:
The system uses multiple independent portable speakers instead of a single complex ceiling array installation. Each speaker unit is a self-contained module that can be independently positioned and adjusted, simplifying installation while achieving the uniform sound distribution and high intelligibility that would otherwise require complex ceiling-mounted infrastructure.
Data Source
AI summary
A system and method for generating, transmitting and distributing audio signals providing automatic adjustments to the audio signals to compensate for one or more of the acoustics in a meeting room, the arrangement of audience arrays and speakers in a meeting room, audio signal volume levels and equalization, and the differences in characteristics of a verbal input.