Musical Sound Control Apparatus Parameter Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional musical sound control apparatuses face challenges in efficiently operating multiple parameters using a common operator at a low cost, particularly due to limitations in operator types and abrupt value changes when switching parameters.
Innovation Solution
A musical sound control apparatus featuring a rotation operator with an index portion that allows for smooth parameter adjustments by changing values based on the operator's position, including a parameter control unit that manages value changes and assignments to prevent abrupt parameter shifts, utilizing a CPU to execute processing and control operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common operator is used to adjust multiple parameters, then device complexity and cost are reduced, but abrupt parameter value changes occur when switching between parameters
Solution Approach 1:
The system detects the current position of the operator before switching parameters and stores this position information. When switching from the first parameter to the second parameter, the operator position is preserved, preventing abrupt value changes. This preliminary detection and storage of operator position resolves the contradiction by maintaining parameter value stability while using a common operator.
Solution Approach 2:
The system continuously monitors the operator position and provides feedback control when switching parameters. By detecting whether the operator is at a specific position and using this feedback to determine how to set the second parameter's value, the system prevents abrupt changes while maintaining the simplicity of a common operator interface.
2Adaptability or versatility
If an operator with unlimited rotation (rotary encoder) is used, then parameter adjustment flexibility is improved, but implementation cost increases
Solution Approach 1:
The patent makes a single operator with limited rotation range perform multiple functions by switching between different parameters. The operator can adjust multiple different parameters (first parameter, second parameter, etc.) sequentially, providing versatility without requiring multiple operators or expensive unlimited-rotation encoders. This multi-functionality resolves the contradiction between flexibility and cost.
Solution Approach 2:
The system changes the functional parameter assigned to the operator over time through parameter switching. By dynamically reassigning which parameter the operator controls, the system achieves flexibility in parameter adjustment while using a cost-effective limited-rotation operator instead of an expensive unlimited-rotation encoder.
3Loss of time
If parameter switching is performed while operator is positioned away from standard position, then operation speed is improved, but parameter value accuracy deteriorates due to abrupt changes
Solution Approach 1:
The system performs preliminary detection of the operator position before parameter switching occurs. By storing the operator position information in advance and using it to set the initial value of the new parameter, the system enables quick parameter switching without causing abrupt value changes, thus maintaining both operation speed and parameter value accuracy.
Solution Approach 2:
The system introduces an intermediary processing step that maps the operator position to appropriate parameter values during switching. This intermediary mechanism ensures that when parameters are switched quickly, the parameter values transition smoothly rather than abruptly, maintaining accuracy while preserving fast operation speed.
Data Source
AI summary
A musical sound control apparatus includes: an operator which as an index portion and changes values of a plurality of kinds of parameters by moving a position of the index portion; and a parameter control unit which executes processing of changing the values of the plurality of kinds of parameters according to an operated position as a position at which the index portion was moved from a standard position by an operation and processing of, when changing an assignment to the operator from a first parameter among the plurality of kinds of parameters to a second parameter among the plurality of kinds of parameters in a state in which the index portion is positioned at a position other than the standard position, setting a value of the second parameter assigned to a value which does not correspond to the position of the index portion.