Pickleball Acoustic Damping via Internal Surface Features
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Solution Overview
Problem
Pickleball games generate high-frequency sounds due to the standard design of the balls, leading to increased perceived noise levels, which can be bothersome in various environments.
Innovation Solution
The development of a low-sound-emitting pickleball design featuring a hollow perforated solid shell with a smooth outer surface and internal surface features such as tabs, ridges, peaks, or ribs, which are designed to reduce sound amplitude and shift frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a standard pickleball design with thin material and penetration holes is used, then the ball maintains standard characteristics and playability, but it generates high-frequency sounds that increase perceived noise levels
Solution Approach 1:
The patent applies mechanical vibration principles by introducing internal surface features (ridges, peaks, ribs) that interact with the ball's vibrational modes during paddle impact. These features alter the resonance characteristics and frequency spectrum of the ball, shifting energy away from high-frequency ranges that are most perceptible to human hearing, thereby reducing perceived noise while maintaining standard ball characteristics
Solution Approach 2:
The patent changes physical parameters of the ball's internal structure by adding surface features with specific dimensions (0.5-10mm height, varying widths) and configurations. These parameter changes modify the ball's acoustic properties by altering vibration patterns and sound emission frequencies, reducing perceived noise while preserving external appearance and playability
2Object-affected harmful factors
If internal surface features are added to the ball, then sound amplitude is reduced and frequencies are shifted, but the manufacturing complexity increases
Solution Approach 1:
The patent applies local quality by adding surface features only to the internal surface of the ball, leaving the external surface smooth and unchanged. This localized modification allows the ball to maintain its standard appearance and external characteristics while introducing acoustic control features only where needed internally, minimizing overall structural complexity
Solution Approach 2:
The patent segments the ball structure into distinct functional zones: an external smooth surface for standard playability and an internal structured surface with ridges, peaks, and ribs for acoustic control. This segmentation allows each zone to perform its specific function independently, reducing the need for complex integrated designs
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 proposed design effectively reduces the perceived sound level during pickleball games by minimizing sound emission and altering the frequency spectrum to lower perceived noise intensity.
Implementation Method 1
the inside surface of the spherical shell has a plurality of surface features sticking out more than 0-1 mm and in some preferred examples less than 10 mm from the local surface
Implementation Method 2
protrusions may be formed of a size including its width, length, height, and material makeup that matches observed resonant frequencies of standard balls in vibration
Implementation Method 3
Other choices may include materials that may dampen sound travelling in the shell or in the interior spaces
Data Source
AI summary
Methods and apparatus for lowering an actual and perceived-sound level produced by sports equipment are described. In some examples, methods and apparatus to lower sound levels produced by pickleball balls are described. In some examples, internal surface features such as ribs, peaks, tabs, channels, divots, and damping layers may be applied. In some examples, composite layered designs may result in lowered amplitude and/or in shifted resonant frequencies. In some examples, heat or light sources may be used to alter the internal surfaces of ball constructs. In some examples the composite layered design may include isolated surface plates. In some examples, electroactive components may reduce sound emission. Methods of measuring a sound level at frequencies and using the measurement results to iteratively design ball designs are described.