Drum Heads with Inner Layer for Authentic Striking Feel
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Solution Overview
Problem
Existing drum heads designed to reduce acoustic striking sounds often compromise on the striking feeling, providing a response that is either weak or different from that of an acoustic drum due to differences in material properties and tension distribution.
Innovation Solution
A drum head configuration with an inner head layer between two outer head layers, where the outer layers are made of breathable material and the inner layer is positioned inside the frame to avoid tension application, increasing the density of the striking surface and suppressing rebound, thus mimicking the striking feel of an acoustic drum while reducing acoustic sound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a drum head is made of breathable material to reduce acoustic striking sound, then acoustic sound is reduced, but the striking feeling becomes weak compared to film material
Solution Approach 1:
The drum head combines breathable outer head layers with a non-breathable inner head layer to create a composite structure. This allows the drum head to reduce acoustic striking sound through the breathable outer layers while the inner layer provides the necessary striking feel by preventing excessive rebound, thus resolving the contradiction between sound reduction and striking quality.
Solution Approach 2:
The inner head layer is nested between the pair of outer head layers, forming a layered structure. The outer breathable layers reduce acoustic sound while the inner non-breathable layer controls rebound and maintains striking feel, effectively nesting different functional materials to simultaneously achieve both sound reduction and authentic striking response.
2Ease of operation
If tension is applied to increase the responsiveness of the drum head, then striking response is improved, but acoustic striking sound increases
Solution Approach 1:
The drum head applies different properties to different layers: the outer head layers are made breathable and tensioned to control acoustic sound, while the inner head layer is made non-breathable and positioned to control rebound. This local differentiation allows tension to be applied effectively for striking response while the breathable structure suppresses acoustic sound generation.
3Ease of manufacture
If a drum head is made with lower density material to reduce weight, then ease of manufacture is improved, but striking feeling becomes different from acoustic drum
Solution Approach 1:
The drum head uses a composite structure with breathable outer layers and a non-breathable inner layer. This composition allows the use of lighter breathable materials while the inner layer provides the necessary density and rebound characteristics to simulate acoustic drum striking feel, thus achieving both ease of manufacture and authentic playing experience.
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 provides a stronger striking response similar to an acoustic drum while significantly reducing acoustic striking sounds by increasing the weight per unit area and controlling tension distribution, ensuring a more authentic feel and sound reduction.
Implementation Method 1
one or both of the outer head layers can be composed of breathable material
Implementation Method 2
the inner head layer is located inside the inner circumferential surface of a frame part... rebounding of the pair of outer head layers and the inner head layer, when struck, can be suppressed
Data Source
AI summary
A drum head having a striking feeling similar to an acoustic drum includes an inner head layer and a pair of outer head layers. The outside diameter of the inner head layer is smaller than the outside diameter of a flat part of the outer head layers and the inside diameter of the edge of the shell. The inner head layer is inside the connection part between the flat part and a cylindrical part of the outer head layers and the shell edge part. When tension is applied to the outer head layers, tension is prevented from being applied to the inner head layer.