Parameter Controller for Audio Tone Generation
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Solution Overview
Problem
Users of electronic musical instruments face poor operability when adjusting parameters for tone generation due to a limited number of controls, making it difficult to efficiently set values for desired timbre, especially with parameters unrelated to direct timbre definition.
Innovation Solution
A parameter controller that allows setting audio signal effects using one increase and decrease control or a combination of controls, switching types and degrees of effects based on operations, including feedback control and absolute value conversion, to efficiently manage parameters with a limited number of controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple controls are provided for adjusting various parameters, then parameter setting capability is improved, but apparatus complexity and cost increase
Solution Approach 1:
The single control unit is designed to perform multiple functions: it can adjust the degree of feedback effect, switch between different effect types (feedback on/off, absolute value conversion on/off), and modify waveform characteristics. This multi-functional design allows one control to replace what would traditionally require multiple separate controls, thereby improving parameter setting capability while keeping the apparatus simple and cost-effective
2Adaptability or versatility
If multiple controls are provided for adjusting various parameters, then parameter setting capability is improved, but the number of controls exceeds available arrangement area
Solution Approach 1:
The control unit is designed as a compact multi-functional component that consolidates multiple parameter adjustment functions into a single physical control element. This allows users to access various parameters (feedback degree, effect types, waveform characteristics) without requiring multiple separate controls that would consume valuable panel space
3Adaptability or versatility
If multiple controls are provided for adjusting various parameters, then parameter setting capability is improved, but operability deteriorates due to repeated assignments
Solution Approach 1:
The control unit provides direct access to multiple parameters through a single control mechanism, eliminating the need for users to repeatedly assign parameters to different controls. The control can directly modify feedback degree, switch effect types, and adjust waveform characteristics without intermediate assignment steps, significantly improving operability
4Device complexity
If a single control is used for adjusting parameters, then apparatus simplicity is improved, but parameter setting efficiency deteriorates
Solution Approach 1:
The control unit is designed with dynamic functionality that allows it to adjust its behavior based on the current state. It can switch between different effect types (feedback effect, absolute value conversion effect, waveform characteristic effect) and adjust their degrees independently, enabling efficient parameter setting with a single dynamic control rather than multiple static controls
Data Source
AI summary
For a parameter used by a tone generator unit to generate an audio signal, type of an effect to be given to the audio signal and degree of the effect to be given to the audio signal are set according to an operation of a panel strip which functions as a combination of an increase control decrease controls with an upper cursor part and a lower cursor part. This setting is made so that when an operation to further decrease the degree of the effect to be given to less than zero is detected, the type of the effect to be given to the audio signal is changed.