Electronic Percussion Sensor Alignment for Sound Fidelity
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Solution Overview
Problem
Conventional electronic percussion instruments face challenges in accurately reproducing musical sounds due to the mismatched detection positions of vibration and pressure sensors, leading to a sense of discomfort for the player.
Innovation Solution
The electronic percussion instrument features a vibration sensor and pressure sensor disposed at the center of the struck surface, with a pressure sensor pressing body made of an elastic material that elastically deforms to support the pressure sensor, ensuring both sensors detect vibrations and pressure changes at the same position, improving sound reproduction fidelity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the vibration sensor and pressure sensor are disposed at different positions on the back side of the struck surface, then the sensors can be structurally separated and easier to install, but the integrated correspondence relationship between detected vibration value and pressure value is lost, making faithful reproduction of musical sound difficult
Solution Approach 1:
The patent merges the detection functions of vibration and pressure sensors by stacking them at the same position on the back side of the struck surface. The vibration sensor and pressure sensor are arranged in a stacked configuration where they detect vibration and pressure changes at the identical location, maintaining integrated correspondence between the detected values and enabling faithful reproduction of musical sound.
2Measurement precision
If the pressure sensor is directly pressed against the struck surface, then the pressure detection accuracy is improved, but the pressure sensor may be damaged by impact forces
Solution Approach 1:
The patent introduces a pressing body made of elastic material as an intermediary between the pressure sensor and the struck surface. This pressing body transmits pressure changes from the struck surface to the pressure sensor while absorbing impact forces through its elasticity, thereby protecting the pressure sensor from damage while maintaining accurate pressure detection.
Solution Approach 2:
The patent changes the physical parameter of the pressing body to be made of elastic material with specific elastic modulus. This elastic property allows the pressing body to deform under impact, reducing the transmission of harmful forces to the pressure sensor while still transmitting pressure changes accurately for detection.
3Stability of the object's composition
If rigid structures are used to support the sensors, then structural stability is improved, but vibration from the struck surface decays poorly and detection accuracy is reduced
Solution Approach 1:
The patent changes the material parameter of the supporting structure from rigid to elastic. The pressing body and supporting structures are made of elastic materials with controlled elastic modulus, allowing them to provide structural stability while simultaneously damping vibrations through elastic deformation, thereby improving vibration detection accuracy.
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 configuration allows for a more faithful reproduction of musical sounds during player interactions by accurately detecting vibrations and pressure changes at the same position, enhancing detection accuracy and preventing sensor damage.
Implementation Method 1
the pressure sensor pressing body is constituted of an elastic body that elastically deforms according to a pressure
Data Source
AI summary
To provide an electronic percussion that ensures reproducing further faithful musical sound relative to a hitting operation by a player. An electronic percussion 100 includes a thin plate-shaped head 101 at an opening formed into a shape of a cylinder with a closed bottom and respective pressure sensor 106 and signal processing device 110 on a bottom 102a. A surface of the head 101 constitutes a struck surface 101a. The head 101 includes a vibration sensor 103 on the back surface. The vibration sensor 103 includes a pressure sensor pressing body 105 on the pressure sensor 106 side. The pressure sensor pressing body 105 is formed to have a tapered shape whose outer diameter gradually thins from the vibration sensor 103 side to the pressure sensor 106 side. The signal processing device 110 outputs a musical sound signal representing a musical sound using respective detection signals of the vibration sensor 103 and the pressure sensor 106.