Sound Production Control Apparatus for Ghost Motion Tempo Adaptation
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Solution Overview
Problem
Existing sound production control systems fail to effectively reflect a player's non-playing motions, such as 'ghost motions,' which are essential for maintaining tempo and groove, leading to unnatural sound effects during instrumental performances.
Innovation Solution
A sound production control apparatus and method that detects a player's motions during non-playing periods and uses this information to control sound production modes and estimate playing tempo, incorporating a detection unit, a sound production unit, and a control unit to generate sound effects based on both playing and non-playing motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed delay time is set to provide delay effect, then the delay effect is consistently applied, but the added effect becomes unnatural when play speed changes according to chord progression or tempo
Solution Approach 1:
The patent applies dynamics by making the delay time variable rather than fixed. The delay time is dynamically adjusted based on detected play speed information, allowing the effect to adapt naturally to changing tempos and chord progressions while maintaining consistency with the music's rhythmic structure
Solution Approach 2:
The patent changes the parameter of delay time from a static value to a dynamic parameter that varies with play speed. By detecting play speed through operational information and adjusting delay time accordingly, the system maintains natural sound effects across different musical contexts
2Manufacturing precision
If ghost motions are detected to control sound production modes, then sound quality and tempo accuracy are improved, but the system complexity increases due to additional detection and control mechanisms
Solution Approach 1:
The patent applies universality by using the same operational information detection mechanism for multiple purposes: detecting both sound-triggering operations and ghost motions, and using this information for both sound production control and tempo estimation. This multi-functionality reduces the need for separate dedicated systems
Solution Approach 2:
The system uses feedback from operational information detection to continuously adjust sound production modes and tempo estimation. The detected motions (both playing and ghost motions) provide feedback that refines the sound production control, improving tempo accuracy without requiring complex additional hardware
3Adaptability or versatility
If play speed information is used to control effect characteristics, then the sound effect adapts to tempo changes, but ghost motions during non-playing periods are not reflected in the effect
Solution Approach 1:
The patent applies preliminary action by detecting and processing ghost motion information during non-playing periods in advance. The system captures temporal information from ghost motions before they would otherwise be lost, using this information to adjust effect characteristics even when no sound is being produced
Solution Approach 2:
The patent ensures continuity of useful action by maintaining effect control based on detected motions throughout all time periods. Both playing operations and ghost motions continue to influence sound production control, ensuring that tempo and groove information are continuously reflected in the audio output without interruption
Data Source
AI summary
A sound production control apparatus by which a sound production mode is controlled on the basis of a player's motion even during a non-playing control operation period. An information obtaining unit 30 obtains detection information by detecting a player's motion. A sound processing unit 36 produces sound on the basis of the detection information obtained in response to operation for generating a sound trigger in the player's motion, and controls a sound production mode on the basis of the detection information obtained in response to operation for generating no sound trigger in the player's motion.