Musical Score Data Processing with Variability Models
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Solution Overview
Problem
Existing technologies can only generate a single type of performance data from a given musical score data, limiting the ability to create various performances with different musical expressions.
Innovation Solution
An information processing method that generates performance data by inputting musical score data and variability data into trained models, specifically using a CVAE or CVRNN decoder to reflect changes in performance, allowing for the creation of multiple performances from a single musical score.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a Bayesian model is used to generate performance data reflecting a specific performer's tendency, then the accuracy of representing that performer's style is improved, but the ability to generate various performances with different musical expressions deteriorates
Solution Approach 1:
The patent segments the performance data generation process into two distinct models: a first provisional model that learns the performer's basic tendency from performance data, and a second provisional model that generates varied performances by incorporating variability data. This segmentation allows the system to maintain accuracy in representing the performer's style while simultaneously enabling generation of diverse performances with different musical expressions.
Solution Approach 2:
The patent introduces variability data as a dynamic element that can be adjusted to generate different performances. By making the performance generation process dynamic and adaptable through variability parameters, the system can reflect changes in performance while maintaining the core performer style, thus resolving the contradiction between accuracy and versatility.
2Device complexity
If only one type of performance data is generated from one type of musical score data, then the simplicity of the generation process is maintained, but the diversity of musical expressions is lost
Solution Approach 1:
The patent divides the complex task of generating diverse performances into manageable segments: the first provisional model handles learning performer tendencies, while the second provisional model handles generation of varied performances. This segmentation makes the overall complex process more manageable while achieving the goal of diverse performance generation.
Solution Approach 2:
The patent introduces variability data as an intermediary element that bridges the gap between simple score data and diverse performance outputs. This intermediary allows the system to maintain relative simplicity in the input while achieving diversity in the output, resolving the contradiction between process simplicity and expression diversity.
Data Source
AI summary
An information processing method includes generating performance data that represent a performance of a musical piece that reflects a change caused by a factor that alters the performance of the musical piece, by inputting musical score data, which represent a musical score of the musical piece, and variability data, which represent the factor, into a trained model.


