Music Playback System Using Acceleration Sensor for Dynamic Track Selection
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Solution Overview
Problem
Conventional music playing apparatuses with acceleration sensors can only control tempo and sound volume, limiting the entertainment value by not allowing for varied music performance changes based on user input.
Innovation Solution
A music playing program that uses an acceleration sensor to detect movement, calculate acceleration data, and select music tracks dynamically, allowing for changes in music performance based on movement magnitude, peak values, and differences, enabling varied musical expressions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional acceleration sensor-based music playing apparatuses are used, then tempo and sound volume can be controlled, but the entertainment value is limited due to inability to provide varied music performance changes
Solution Approach 1:
The patent applies dynamics by making the music performance parameters (track selection, instrument type, style, beats, tonality) changeable and adaptable in real-time based on acceleration sensor input. The system transitions from static music playback to dynamic performance variation where multiple musical attributes are modified according to user movement, thereby enhancing entertainment value without requiring complete system redesign
Solution Approach 2:
The patent implements multi-functionality by enabling a single acceleration sensor-based music playing apparatus to control multiple music performance parameters simultaneously (track selection, instrument type, style, beats, tonality). This allows one device to perform multiple musical control functions that were previously requiring separate systems or manual controls, thereby increasing versatility without proportionally increasing device complexity
2Adaptability or versatility
If only tempo and sound volume control are implemented, then the system remains simple, but the entertainment experience is limited
Solution Approach 1:
The patent merges multiple music control functions (tempo, volume, track selection, instrument type, style, beats, tonality) into a unified acceleration sensor-based control system. By combining these previously separate control mechanisms into one input method, the system enhances music performance adaptability while maintaining ease of operation, as users control all parameters through natural movement rather than managing multiple separate controls
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables dynamic music performance changes according to user movement, enhancing the entertainment experience by allowing changes in instrument type, style, beats, and tonality, providing a more immersive conducting-like experience.
Implementation Method 1
an input device (7) including an acceleration sensor (701) for detecting the acceleration in at least one axial direction
Data Source
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AI summary
Acceleration data outputted from an acceleration sensor provided in an input device is acquired and a magnitude of an acceleration is calculated. Next, based on the calculated magnitude of the acceleration, at least one piece of track data representing a target music to play is selected from music piece data including a plurality of pieces of track data stored in memory means. Then, based on the selected track data, data for controlling a sound generated from a sound generation device is outputted.