Sound Vest Haptic Language Torso Mapping
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Solution Overview
Problem
Hearing impaired individuals lack effective means to experience and interpret auditory inputs such as music and environmental sounds, as existing technologies primarily rely on simple sensory substitution without real-time spectral analysis.
Innovation Solution
A wearable vest system utilizing vibratory motors to generate haptic language by decomposing audio signals into control signals, mapping frequency components to specific parts of the torso, and incorporating a signal processor with real-time spectral analysis and MIDI data conversion for enhanced tactile representation of sound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If simple sensory substitution is used for hearing impaired individuals, then the device complexity is reduced, but the information quality and interpretation accuracy of sound is insufficient
Solution Approach 1:
The audio signal is segmented into multiple frequency bands using spectral analysis, with each band mapped to different regions of the torso. This allows detailed sound information to be preserved and transmitted through distributed haptic actuators, resolving the contradiction by organizing complex information processing into manageable segments.
Solution Approach 2:
The system transforms one-dimensional audio signals into two-dimensional spatial haptic patterns across the torso surface. By mapping frequency components to different body regions and using multiple actuators simultaneously, the system preserves rich sound information while distributing the processing load across a spatial array.
2Measurement precision
If real-time spectral analysis and MIDI conversion are implemented, then the sound interpretation accuracy is improved, but the processing time and computational requirements increase
Solution Approach 1:
The system performs preliminary spectral analysis and MIDI conversion in real-time, preparing haptic control signals before they are needed for actuator drive. This pre-processing approach ensures that when sound events occur, the system can respond immediately with pre-computed haptic patterns, maintaining both precision and real-time performance.
Solution Approach 2:
The spectral analysis and signal conversion operate continuously rather than in discrete batches, ensuring uninterrupted real-time processing. This continuous operation eliminates gaps in sound interpretation while maintaining constant computational throughput, preventing time loss despite the complexity of the processing tasks.
3Loss of information
If up to 128 motors are used to create a tono-topic map, then the haptic representation quality is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The 128 motors are segmented into multiple independent groups or modules that can be manufactured separately and then assembled into the complete vest. This modular approach maintains the high haptic representation quality while making the manufacturing process more manageable and less complex.
Solution Approach 2:
The system uses standardized motor units that can serve multiple functions and be positioned in different configurations. These universal actuator modules can be mass-produced using standard manufacturing processes, then assembled into the customized torso mapping pattern, reducing overall manufacturing complexity while maintaining high haptic fidelity.
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 hearing impaired individuals to experience music and environmental sounds through a unique haptic language, providing a more nuanced and effective means of sound interpretation by utilizing up to 128 motors to create a tono-topic map of the torso, improving sensory substitution beyond simple vibration.
Implementation Method 1
uses vibratory motors to generate a haptic language for music (or other sound)
Data Source
AI summary
Vibratory motors are used to generate a haptic language for music or other sound that is integrated into wearable technology. The disclosed system enables the creation of a family of devices that allow people with hearing impairments to experience sounds such as music or other auditory input to the system. For example, a “sound vest” transforms musical input to haptic signals so that users can experience their favorite music in a unique way, and can also recognize auditory cues in the user's everyday environment and convey this information to the user using haptic signals.