Augmented Hearing System Spatial Audio Orientation
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Solution Overview
Problem
Current tactical headsets used by ground soldiers provide limited hearing protection and combat communication capabilities, failing to effectively convey spatial information about personnel and environmental elements in a battlefield context.
Innovation Solution
An augmented hearing system incorporating a headset with an orientation system, control system, and interface system that uses accelerometers, magnetometers, and gyroscopes to determine orientation and provide spatialization indications through sound and visual cues, allowing soldiers to better navigate and communicate in complex combat environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If current tactical headsets provide hearing protection and combat communication, then soldiers can communicate in combat environments, but spatial information about personnel and environmental elements is not effectively conveyed
Solution Approach 1:
The patent transforms 2D audio representation (left/right channels) into 3D spatial audio by incorporating vertical dimension through head-related transfer functions (HRTF) and orientation sensing. This allows sound to be positioned in three-dimensional space around the soldier, providing comprehensive spatial information about personnel and environmental elements without adding excessive complexity to the headset system.
Solution Approach 2:
The patent introduces an intermediary processing system that receives audio signals, determines spatial coordinates of sound sources using orientation data from accelerometers, magnetometers, and gyroscopes, and then renders these signals with appropriate spatial characteristics. This intermediary layer enables spatial information conveyance while keeping the headset itself relatively simple.
2Loss of information
If spatialization indications are provided through spatial audio rendering, then situational awareness is enhanced, but computational processing requirements increase
Solution Approach 1:
The patent pre-calculates and stores head-related transfer functions (HRTF) for various spatial positions before runtime. During operation, the system only needs to retrieve pre-computed HRTF data based on current orientation and sound source coordinates, rather than performing complex spatial audio calculations in real-time. This significantly reduces computational processing requirements while maintaining enhanced situational awareness.
Solution Approach 2:
The system uses the headset's own orientation sensors (accelerometers, magnetometers, gyroscopes) to determine the spatial relationship between the soldier and sound sources. By leveraging already-present sensors for spatial determination rather than requiring external positioning systems, the patent reduces overall computational and system complexity while improving situational awareness.
3Measurement precision
If orientation sensors (accelerometers, magnetometers, gyroscopes) are integrated into the headset, then spatial orientation can be determined, but device weight and complexity increase
Solution Approach 1:
The patent combines multiple orientation sensing functions (acceleration measurement, magnetic field sensing, rotational rate measurement) into a single integrated inertial measurement unit (IMU) within the headset. This merging approach provides comprehensive spatial orientation data while minimizing the added weight and complexity compared to using separate sensors for each function.
Solution Approach 2:
The orientation sensors serve multiple functions: determining headset spatial orientation for audio rendering, tracking soldier head movements for dynamic audio adjustment, and potentially providing navigation information. This multi-functionality justifies the added weight by extracting maximum value from each sensor component.
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
Enhances situational awareness by providing spatialization indications of personnel and environmental elements, improving communication and response times in combat situations by integrating spatial audio and visual feedback.
Implementation Method 1
The orientation system may, for example, include at least one accelerometer, magnetometer and/or gyroscope
Implementation Method 2
The orientation system may, for example, include at least one accelerometer, magnetometer and/or gyroscope
Implementation Method 3
The orientation system may, for example, include at least one accelerometer, magnetometer and/or gyroscope
Data Source
AI summary
Some implementations may involve receiving, via an interface system, personnel location data indicating a location of at least one person and receiving, from an orientation system, headset orientation data corresponding with the orientation of a headset. First environmental element location data, indicating a location of at least a first environmental element, may be determined. Based at least in part on the headset orientation data, the personnel location data and the first environmental element location data, headset coordinate locations of at least one person and at least the first environmental element in a headset coordinate system corresponding with the orientation of the headset may be determined. An apparatus may be caused to provide spatialization indications of the headset coordinate locations. Providing the spatialization indications may involve controlling a speaker system to provide environmental element sonification corresponding with at least the first environmental element location data.