Switchable Touch Bar Mode for Musical Instrument Control
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Solution Overview
Problem
The operability of sliders in electronic musical instruments is largely dependent on user feeling and is not optimized for both continuous and discontinuous operations, making it challenging to provide intuitive control over musical parameters.
Innovation Solution
An input device with a switchable mode between continuous and grid modes, where the continuous mode allows for continuous parameter changes through slide operations and the grid mode allows for discrete parameter selection based on contact positions, using a touch bar with section indicators to enhance user recognition of operation boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a slider is used for continuous operation, then continuous value input is enabled, but operability depends on user feeling and lacks optimization for both continuous and discontinuous operations
Solution Approach 1:
The slider dynamically changes its operational characteristics based on position. When the slider is in the retracted position, it functions as a continuous input device. When pushed in, it activates discrete section indicators that divide the operation area into segments, allowing the same physical component to serve both continuous and discontinuous operation modes seamlessly
Solution Approach 2:
The system changes the operational parameter of the slider from continuous to discontinuous by altering the display state of section indicators. When the slider is pushed, section indicators become visible, transforming the interaction model from continuous analog input to discrete segmented input, thereby resolving the contradiction between continuous operation capability and ease of operation for different user needs
2Ease of operation
If section indicators are displayed during grid mode, then discrete parameter selection is enhanced, but device complexity increases
Solution Approach 1:
The section indicators serve multiple functions: they visually define discrete sections for grid mode operation, provide tactile feedback boundaries, and maintain the continuous operational capability when retracted. This multi-functionality allows the same visual elements to support both discrete and continuous operation modes without requiring separate components, thereby reducing overall device complexity while enhancing discrete parameter selection
Solution Approach 2:
The section indicators are dynamically controlled to appear only when needed (in grid mode when slider is pushed), rather than being permanently displayed. This dynamic display behavior reduces visual clutter and interface complexity during continuous operation while providing enhanced discrete selection guidance when required, resolving the contradiction between ease of operation and device complexity
Data Source
AI summary
An input device includes a touch bar having an operation area for receiving a contact operation performed by a user, a switcher that switches between a first mode (continuous mode) in which a continuously changing value is receivable in response to an operation performed on the operator and a second mode (grid mode) different from the first mode, and a section presenter that presents section information representing a plurality of sections of the operation area during the second mode.