Parallel Column Speaker System for Reducing Wall Reverberation
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Solution Overview
Problem
Conventional speaker devices face challenges in minimizing directivity angles in both vertical and horizontal directions, leading to reverberation issues due to sound reflections on walls, despite effective suppression of reflections on floors and ceilings.
Innovation Solution
A speaker device comprising two column speakers with the same frequency characteristics, connected in parallel by a holder with adjustable components such as connecting members, support members, and angle adjustment joints, allowing for precise control of sound wave emission directions to reduce directivity angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a column speaker with vertically arranged speaker units is used to decrease vertical directivity angle, then reflection on floor and ceiling is suppressed, but reverberation occurs due to wall reflection
Solution Approach 1:
The speaker system is divided into multiple independent column speakers (first column speaker, second column speaker) that can be arranged in different orientations. Each column speaker maintains its vertical arrangement for floor/ceiling reflection control, while the combination of multiple segmented units enables horizontal direction control through strategic placement in corners or along walls.
2Object-affected harmful factors
If speaker units are arranged in a row to decrease directivity angle, then sound spread is reduced, but the speaker device cannot effectively address both vertical and horizontal reverberation simultaneously
Solution Approach 1:
The speaker system incorporates adjustable components including angle adjustment joints and tilt angle adjustment joints that enable dynamic modification of sound wave emission directions. These mechanisms allow the column speakers to be oriented at different angles relative to each other and to walls, providing adaptability for different installation environments and reverberation control requirements.
Solution Approach 2:
The invention transitions from controlling sound distribution in a single vertical dimension to three-dimensional control by combining vertical arrangement (for floor/ceiling reflection) with horizontal angular adjustment (for wall reflection). The angle adjustment mechanisms enable the system to operate effectively in both vertical and horizontal dimensions simultaneously.
3Manufacturing precision
If column speakers are fixed in parallel position, then installation is simple, but precise control of sound wave emission directions is limited
Solution Approach 1:
The speaker holder is segmented into multiple independent adjustment mechanisms: angle adjustment joints for controlling the horizontal angle between column speakers, tilt angle adjustment joints for vertical orientation, and connecting members for structural support. This segmentation allows each function to be adjusted independently without affecting other parameters.
Solution Approach 2:
The speaker holder incorporates dynamic adjustment capabilities through angle adjustment joints and tilt angle adjustment joints that enable precise positioning of column speakers at various angles. These mechanisms transform the fixed parallel structure into a dynamically adjustable configuration, allowing optimization of sound wave emission directions for different installation scenarios.
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 solution effectively decreases directivity angles, thereby reducing reverberation caused by wall reflections and allowing for finer adjustments in sound wave interference, enhancing sound distribution in corner installations.
Implementation Method 1
A first column speaker has a first elongated housing and a plurality of first speaker units arranged in a row inside the first elongated housing. The second column speaker has a second elongated housing and a plurality of second speaker units arranged in a row inside the second elongated housing. The first and second speaker units have same frequency characteristics.
Data Source
AI summary
A speaker device includes a first column speaker, a second column speaker and a speaker holder. The first column speaker has a first elongated housing and a plurality of first speaker units arranged in a row inside the first elongated housing. The second column speaker has a second elongated housing and a plurality of second speaker units arranged in a row inside the second elongated housing. The first and second speaker units have same frequency characteristics. The speaker holder connects the first and second column speakers together in parallel.