Acoustic Valve Porting Element for Percussion Instruments
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Solution Overview
Problem
Current sound reinforcement systems for percussion instruments and resonating drum heads struggle to effectively adjust low-frequency sound quality due to limitations in adjustable acoustic valve porting elements, which restrict the flexibility in altering back pressure ratios and proximity to reflective surfaces.
Innovation Solution
The implementation of an acoustic variable porting system with adjustable registers and ports, allowing for mechanical or electrical adjustment of port sizes, and the use of innovative geometries such as radial dials, lineal sliders, louvers, and iris configurations to optimize sound transmission and absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed acoustic valve porting elements are used, then device complexity is reduced, but adaptability of low-frequency sound quality adjustment is limited
Solution Approach 1:
The patent implements adjustable acoustic valve porting elements that can dynamically change port size and configuration. The system includes mechanisms to vary the effective port area, allowing the acoustic characteristics to be adapted in real-time rather than being fixed during manufacturing.
Solution Approach 2:
The acoustic valve porting system is divided into multiple adjustable components including separate port elements, registers, and adjustment mechanisms. This segmentation allows independent control of different port parameters to achieve precise acoustic tuning without requiring complete system redesign.
2Adaptability or versatility
If multiple adjustable components are added to enhance sound quality control, then adaptability improves, but device complexity increases
Solution Approach 1:
The adjustable acoustic valve porting elements are designed to perform multiple functions simultaneously - controlling back pressure ratios, adjusting port size, and modifying acoustic impedance. This multi-functionality reduces the need for separate dedicated components for each adjustment type.
Solution Approach 2:
The patent combines several adjustment functions into integrated port elements that can simultaneously control multiple acoustic parameters. The adjustment mechanisms are merged with the port structure itself, eliminating the need for separate control components.
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 solution enhances the adjustability of sound reinforcement systems, allowing for precise control over low-frequency sound quality by varying port sizes and proximity to sound sources, thereby improving the overall acoustic performance and flexibility of percussion instruments and speaker enclosures.
Implementation Method 1
altering the ratio of back pressure to the speaker-microphone
Data Source
AI summary
An acoustic variable porting system includes an acoustic element and an acoustic variable porting element forming a port into the acoustic element. The acoustic variable porting element is adjustable between at least an open position, in which the port is generally open, and a closed position, in which the port is generally closed. The acoustic element may be at least one of: a sub-kick, a ported drum, and a speaker.