Automatic Performance Device Rhythm Detection Pattern Switching
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Solution Overview
Problem
Existing electronic musical instruments require manual selection of accompaniment patterns when a melody changes, disrupting the performer's flow as they need to adjust the accompaniment style data to match the new melody, leading to inefficiencies in performance.
Innovation Solution
An automatic performance device and method that detects the rhythm and velocity of the performer's input, automatically switching to a suitable performance pattern and adjusting the volume accordingly, using a pattern storage system and input device to match the detected rhythm and velocity with stored patterns, allowing seamless transitions without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual selection of accompaniment patterns is implemented, then the performer can control the accompaniment style, but the performance flow is disrupted and efficiency decreases
Solution Approach 1:
The system automatically detects the melody's rhythm and characteristics, then autonomously selects and switches to the appropriate accompaniment pattern without requiring performer intervention. The performer simply plays the melody, and the system serves itself by matching the correct accompaniment, thereby maintaining performance flow while ensuring appropriate accompaniment selection.
Solution Approach 2:
The system changes the accompaniment pattern parameters automatically based on detected melody characteristics such as rhythm type, tempo, and musical section. By dynamically adjusting these parameters in response to real-time performance input, the system maintains both ease of operation and performance efficiency.
2Productivity
If automatic rhythm detection is implemented, then performance continuity is maintained, but system complexity increases
Solution Approach 1:
The patent replaces manual mechanical selection operations with automatic electronic rhythm detection and pattern matching systems. By using computational algorithms to detect rhythm characteristics and match them with stored performance patterns, the system achieves automatic switching without manual intervention, maintaining performance continuity while managing complexity through software-based solutions.
3Adaptability or versatility
If multiple performance patterns are stored, then adaptability to different melodies is improved, but memory requirements and processing time increase
Solution Approach 1:
The system segments the large set of performance patterns into organized categories based on musical characteristics such as rhythm type, tempo, and section (intro, main, ending). This segmentation allows efficient storage and rapid retrieval of appropriate patterns without requiring the system to process all available patterns simultaneously, thereby maintaining adaptability while managing data quantity effectively.
Data Source
AI summary
An automatic performance device includes: a pattern storage part, storing a plurality of performance patterns; a performing part, performing a performance based on the performance pattern stored in the pattern storage part; an input part, inputting performance information from an input device; a rhythm detection part, detecting a rhythm from the performance information inputted by the input part; an acquisition part, acquiring from among the plurality of performance patterns stored in the pattern storage part the performance pattern corresponding to the rhythm detected by the rhythm detection part; and a switching part, switching the performance pattern being performed by the performing part to the performance pattern acquired by the acquisition part.