Adaptive MIDI Wind Controller Using Air and Orientation Sensors
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Solution Overview
Problem
Existing systems for controlling software and hardware, such as musical synthesizers, lack hands-free operation capabilities, which is a limitation for individuals with limited mobility, like quadriplegics who can only use head motion, sipping, or blowing.
Innovation Solution
An air-activated system controller that combines air pressure and flow sensors with orientation sensors to generate electromagnetic signals, processed into event messages compatible with MIDI protocol, allowing for hands-free control of virtual instruments using a mouthpiece, linear potentiometer slide assembly, and orientation sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional hand-held control devices (mouse, touch screen, track ball) are used, then system control functionality is achieved, but hands-free operation capability is lost
Solution Approach 1:
The system integrates multiple sensor types (air pressure, air flow, orientation, position) into a single controller that can detect various user inputs (blowing, sipping, head motion) and translate them into comprehensive control signals for virtual musical instruments, achieving both hands-free operation and full control functionality
Solution Approach 2:
The patent introduces an intermediary processing system that converts physical sensations (air pressure, flow, orientation changes) into electromagnetic signals compatible with MIDI protocols, bridging the gap between hands-free input methods and digital music software control requirements
2Measurement precision
If air pressure and flow sensors are combined with orientation and position sensors, then hands-free control precision is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (air pressure sensor, air flow sensor, orientation sensor, position sensor) into an integrated controller system where all sensors work together to provide comprehensive input detection, reducing overall system complexity through unified signal processing and control architecture
Solution Approach 2:
The system employs self-calibration and adaptive algorithms that automatically adjust sensor thresholds and sensitivity levels based on user behavior patterns, reducing the need for manual configuration and simplifying operation despite the multiple sensors involved
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 hands-free control of musical instruments and software packages, providing a user-friendly interface for physically disadvantaged individuals by translating air pressure, flow, and orientation into control signals for pitch, volume, and other parameters, enhancing accessibility in music synthesis.
Implementation Method 1
an air sensor configured to provide an electromagnetic signal representative of an air-pressure or an air-flow
Implementation Method 2
an air sensor configured to provide an electromagnetic signal representative of an air-pressure or an air-flow
Implementation Method 3
an orientation sensor configured to provide another electromagnetic signal representative of a relative orientation, or a change of orientation
Implementation Method 4
a position sensor configured to provide a signal representative of a relative position of the air sensor
Implementation Method 5
A signal processor is configured, or programmed, to combine signals from the two sensors to provide an event message
Data Source
AI summary
An air pressure and/or air flow sensing, system control device. The device may include an orientation sensor configured to provide a signal representative of a relative orientation of the air sensor. The device may have signal processor configured to combine signals from the two sensors to provide an event message that may be used to interface with a software package such as a music synthesizer package, or a software package for setting up a music synthesizer package. The device may also have a position sensor configured to provide a signal representative of a position of the air sensor relative to a fiducial that may be a plane of a surface of a component of the device.