Internal Drum Tuning Assemblies for Rapid Pitch Control
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Solution Overview
Problem
Current methods for tuning percussion instruments, such as drums, lack flexibility and consistency in varying pitch and volume, and are not quick enough to achieve desired sound quality during play.
Innovation Solution
A tuning system installed inside a drum with internal tuning assemblies (ITAs) that include a vertically translating disc, louvers, and sliding plates, allowing for manipulation of the space between the batter and resonant heads to alter sound pitch, resonance, and amplitude.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional tuning methods (changing head tension or adding pads) are used, then sound quality can be modified, but the outcome is inconsistent and cannot be varied quickly enough
Solution Approach 1:
The patent implements dynamic tuning elements including a movable disc that can be positioned at different heights along the drum shell, louvers that can rotate to different angles, and sliding plates that can move along guides. These dynamic components allow rapid adjustment of sound characteristics during performance, resolving the contradiction between fast tuning speed and consistent sound quality by providing both speed and precision control.
Solution Approach 2:
The invention changes multiple physical parameters simultaneously - the position of the disc (affecting air column volume), the angle of louvers (affecting sound wave interference), and the position of sliding plates (affecting passage area). By providing precise control over these parameters, the system achieves both quick tuning response and consistent, repeatable sound outcomes.
2Adaptability or versatility
If head tension is changed to adjust pitch, then frequency can be modified, but the process is time-consuming and lacks flexibility
Solution Approach 1:
The patent segments the tuning function into multiple independent components: the disc for vertical positioning, louvers for angular adjustment, and sliding plates for lateral movement. Each component can be adjusted independently and quickly without affecting the others, providing flexible pitch variation while minimizing time loss compared to traditional head tension adjustment.
Solution Approach 2:
The dynamic nature of the disc, louvers, and sliding plates allows for rapid reconfiguration of the air column and sound path. This dynamic adjustment mechanism provides adaptability in pitch variation while significantly reducing the time required to achieve desired sound quality compared to static head tension changes.
3Productivity
If pads are added to change sound quality, then timbre can be modified, but the outcome is inconsistent and tuning speed is slow
Solution Approach 1:
Instead of static pads, the patent uses dynamic components - a vertically movable disc, rotatable louvers, and laterally movable sliding plates. These components can be quickly repositioned to achieve different sound qualities, providing both fast tuning speed and wide variance in sound quality output.
Solution Approach 2:
The invention controls multiple parameters (disc height, louver angle, plate position) that directly affect sound quality. By providing precise and rapid control over these parameters, the system achieves both high tuning speed and extensive adaptability in sound quality variance, overcoming the limitations of pad-based tuning.
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
Enables rapid and consistent adjustment of sound quality, allowing for precise control over pitch, volume, and resonance during performance.
Implementation Method 1
a threaded rod installed slidably through said support ring, a disc attached to the threaded rod, and a nut engaging with said threaded rod, when turned, translates the disc vertically up or down
Implementation Method 2
one end of a torsion spring is rigidly attached to said axis pin and the other end is attached to said sliding plate and a first cord is attached to said sliding plate and a second end of the torsion spring connects to a clasp outside of said drum shell to orient and lock said sliding plate in place
Data Source
AI summary
A tuning system enabled to be installed inside a drum percussion musical instrument is provided comprising a cylindrical drum shell having a batter head at a top, a bottom, and one or more internal tuning assemblies (ITAs) installed within an inner volume of the drum shell. Sound elements created by striking the batter head of the drum includes any one or more of pitch, resonance and amplitude and are altered, thereby providing tuning of the drum via manipulation of the one or more of the ITAs.