Music Retrieval Using Impression Axes and Cross-Key Input
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Solution Overview
Problem
Existing music retrieval systems require complex user operations, such as inputting parameter values for adjectives and antonyms, and often necessitate large displays for three-dimensional information spaces, limiting user interaction and accessibility.
Innovation Solution
A music-piece retrieval and playback apparatus that utilizes impression axes and words, allowing users to intuitively select music pieces by designating impression axes and words, generating commands for changing these designations, and updating preferences based on user interactions, enabling simple and intuitive music selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If users input parameter values for adjective pairs to specify desired music files, then retrieval precision is improved, but operation time and complexity increase significantly
Solution Approach 1:
The system pre-calculates and stores factor vectors for all music files in the database during a setup phase, so that when users perform retrieval operations, the computationally intensive vector calculations have already been completed. This eliminates the need for users to wait during retrieval operations while maintaining high retrieval precision through vector distance calculations.
Solution Approach 2:
The system introduces factor vectors as an intermediary representation between music files and user queries. Instead of directly comparing raw music attributes with user preferences, the system maps both to factor vectors in a coordinate space, enabling efficient and accurate similarity calculations through vector distance measurements without requiring complex user input parameterization.
2Loss of information
If the system uses three-dimensional information space representation, then information visualization capability is improved, but display size requirements and device complexity increase
Solution Approach 1:
The system transforms multi-dimensional music attributes and preferences into a factor coordinate space with defined axes, enabling systematic organization and visualization of information. This dimensional transformation allows complex information relationships to be represented in a structured spatial framework that can be effectively visualized without requiring excessively large displays.
Solution Approach 2:
The information space is segmented into distinct factor axes, each representing specific musical dimensions. This segmentation allows the system to break down complex three-dimensional information into manageable components that can be processed and displayed efficiently, reducing the overall display complexity while maintaining comprehensive information representation.
3Adaptability or versatility
If the system requires strict input device limitations, then device portability is improved, but ease of operation deteriorates
Solution Approach 1:
The system employs a cross-key input device that serves multiple functions: it can input factor vector values, select music files, navigate menus, and control playback operations. This multi-functional design eliminates the need for separate specialized input devices, maintaining portability while providing comprehensive operational capabilities through a single versatile interface.
Solution Approach 2:
The system allows dynamic adjustment of factor vector parameters through simple key operations. Users can modify music selection criteria by changing factor values using the cross-key device, enabling flexible and intuitive control over retrieval parameters without requiring complex input mechanisms, thus maintaining ease of operation on portable devices.
Data Source
AI summary
Impression words express impressions about music pieces and are separated into groups called impression axes. Impression words in each of the impression axes have meanings mutually related with each other. There is a correspondence among the impression words, the impression axes, and the music pieces. One is designated among the impression axes. One is designated among the impression words. A music piece corresponding to the designated impression axis and the designated impression word is played back. Commands are generated which constitute questionnaire choice information about the played-back music piece. A user is enabled to choose one from the generated commands. An impression axis and an impression word corresponding to the command chosen by the user are obtained. A music piece corresponding to the obtained impression axis and the obtained impression word is played back.