Virtual Key-Switch Mapping for Real-Time MIDI Patch Selection
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Solution Overview
Problem
Current MIDI and audio processing systems face limitations in real-time switching between patches, articulations, and dynamic transitions, requiring numerous key-switches, compromising intuitive control and realism in music production.
Innovation Solution
The system employs virtual key-switches mapped to musical concepts, allowing real-time switching between different playing states, dynamic layer morphing, and independent alternate sample cycling, enabling seamless transitions and complex MIDI generation with a reduced number of physical keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large number of key-switches is used to support many patches, then the number of accessible patches increases, but the playable range of the MIDI keyboard is reduced and the complexity of locating proper patches increases
Solution Approach 1:
The system allows regular MIDI keys to serve dual purposes: playing musical notes and functioning as key-switches for patch selection. By detecting whether a key is pressed before or during note playback, the system determines its function, eliminating the need for dedicated key-switch keys and preserving the full keyboard range for both playing and patch selection.
Solution Approach 2:
The system dynamically reinterprets the function of MIDI keys based on timing and context. Keys can switch between being playable notes and patch selectors depending on when they are activated relative to note playback, allowing the keyboard layout to adapt its functionality in real-time without physical reconfiguration.
2Adaptability or versatility
If traditional key-switches are used for patch selection, then patch switching is possible, but real-time switching between multiple articulations and playing techniques is limited and requires multiple separate instruments
Solution Approach 1:
The system adds a temporal dimension to key-switch operation by detecting the timing of key presses relative to note playback. This allows a single keyboard to access multiple articulations and playing techniques through timing-based differentiation rather than requiring multiple physical keyboards or instruments stacked vertically.
Solution Approach 2:
The system changes the operational parameters of the MIDI keyboard by introducing timing-based detection and interpretation of key presses. By monitoring when keys are pressed relative to note events, the system dynamically adjusts its behavior to support multiple articulations within a single instrument context.
3Adaptability or versatility
If key-switches are used for patch selection, then patches can be selected, but the number of different pre-recorded note-transitions that may be accessed is limited
Solution Approach 1:
The system creates virtual key-switches that can be assigned to any MIDI key, allowing unlimited patch selection capabilities without adding physical complexity. These virtual key-switches are software-based representations that can be configured to trigger specific patches or articulations, effectively copying the key-switch function across the entire keyboard range.
Data Source
AI summary
An advanced MIDI/audio processing system with virtual key-switches. The virtual key-switches are mapped to different musical concepts. As a user presses a key-switch in real time with the playing of musical notes, the musical concept mapped to the key-switch that was pressed is applied. The instrument then switches to a new playing state based on the particular musical concept that was applied. Furthermore, the system is configured to provide a smooth transition between dynamic levels when applying crescendo or diminuendo effects via a modulation wheel. The system also configured to provide enhanced cycling of alternate samples by providing an individual alternate cycle for each note of each articulation in each dynamic level. Furthermore, the system is configured to allow a user to store and recall specific cycle positions, and override an existing cycle to choose a specific alternate sample for a specific note.