Percussion Instrument Lever Position Detection for Sound Variety
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Solution Overview
Problem
Conventional percussion instruments can only generate two types of musical sounds, depending on the contact and separation of the resonance head and snare wire, which is insufficient for producing a variety of musical sounds.
Innovation Solution
A percussion instrument equipped with a rotatable operator and a first sensor that detects the position of the operator between initial and terminal positions, allowing for the generation of different musical sounds based on the detected position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional percussion instrument uses only contact and separation states of the snare wire and resonance head, then the structure remains simple, but the variety of musical sounds is limited
Solution Approach 1:
The lever operator is designed to be rotatable with multiple detectable positions (initial position, terminal position, and intermediate positions), transforming a static binary switch into a dynamic multi-position control mechanism. This allows the snare wire contact state to be dynamically adjusted across multiple positions, generating diverse musical sounds without adding complex mechanical structures
Solution Approach 2:
A detection device (sensor) is integrated to detect the position of the lever operator and provide feedback signals to the control device. This feedback mechanism enables precise control over sound generation based on lever position, allowing the system to generate different musical sounds corresponding to different lever positions while maintaining a relatively simple overall structure
2Adaptability or versatility
If a rotatable operator with position detection is added, then the variety of musical sounds increases, but the device complexity increases
Solution Approach 1:
The lever operator serves multiple functions: it acts as both the mechanical component for adjusting snare wire contact and as the detection target for position sensing. The same lever structure provides both mechanical control and positional feedback, eliminating the need for separate control and sensing mechanisms, thus increasing sound variety while minimizing component addition
Solution Approach 2:
The detection device acts as an intermediary between the mechanical lever operator and the control device. It converts the mechanical position information into electrical signals that the control device can process, enabling precise sound control without requiring direct mechanical linkages between the lever and sound generation components, thereby simplifying the overall system architecture
Data Source
AI summary
A light sensor 19 is provided for detecting a position of a lever 14 (an intermediate position between an initial position and a terminal position of the lever 14) between an ON state and an OFF state of the lever 14, and a musical sound in accordance with the position of the lever 14 detected by the light sensor 19 is generated. That is, in each of the ON state of the lever 14, the OFF state of the lever 14, and the state where the lever 14 is therebetween, different musical sounds are generated when the head 6 is percussed. Therefore, compared with the conventional technique where musical sounds can only be generated based on the ON or OFF state of the lever 14, musical sounds of a greater variety can be generated.