Electronic Percussion Instrument Vibration Isolation via Elastic Frame
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electronic percussion instruments suffer from noise production due to the vibration of non-percussion surfaces when a percussion is made on the percussion surface.
Innovation Solution
The electronic percussion instrument incorporates a design with a percussion surface and a non-percussion surface, where the non-percussion surface is formed by an upper surface of a second frame that is connected to a first frame via an elastic body, and no sensor is installed on the second frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a frame structure is used to improve appearance and form the instrument profile, then the aesthetic quality and structural integrity are improved, but noise is generated due to vibration propagation from the percussion surface to the non-percussion frame surfaces
Solution Approach 1:
An elastic body is introduced as an intermediary element between the first frame (percussion surface) and the second frame (non-percussion surface). This elastic body absorbs and isolates vibrations, preventing noise propagation while allowing the frames to maintain their structural connection for appearance and integrity.
Solution Approach 2:
The frame structure is divided into two separate frames: the first frame that forms the skeleton of the percussion surface and the second frame that forms the non-percussion surface. This segmentation allows each frame to be optimized for its specific function while reducing unwanted vibration coupling between them.
2Measurement precision
If a sensor is installed on the frame to detect vibrations, then measurement capability is improved, but the frame structure becomes more complex and heavier
Solution Approach 1:
The sensor is extracted from the second frame (non-percussion surface) and repositioned to the first frame (percussion surface), where it can effectively detect vibrations without adding complexity to the non-percussion side. Alternatively, the sensor is integrated into the elastic body itself, eliminating the need for separate sensor mounting structures on the frames.
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 design effectively reduces noise by absorbing vibrations through the elastic body and preventing noise propagation to the non-percussion surface, thereby enhancing the accuracy of percussion detection while minimizing sound production.
Implementation Method 1
an elastic body, fixed to the first frame; and a second frame, which is connected with the first frame via the elastic body
Data Source
Figure 1
Figure 2
Figure 3(a)~3(f)
AI summary
A sensor for vibration detection is not installed to a second frame 301b, and an upper surface of the second frame 301b is a non-percussion surface not assumed to receive a percussion. Since the second frame 301b is elastically supported by the first frame 301a via the elastic bodies 309a to 309c, at the time of a percussion to a head 202 or a cover 206, the elastic bodies 309a to 309c can attenuate the vibration propagated from the first frame 301a to the second frame 301b. Thus, since the noise produced due to the vibration of the second frame 301b can be suppressed, the performer is allowed a favorable feeling of performance.