AR Head-Up Display Audio Event Awareness
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Solution Overview
Problem
Current augmented reality head-up displays for vehicles do not effectively provide information about audio events relevant to driving tasks, such as sounds from the environment, which can distract or inform the driver, without requiring them to look away from the road.
Innovation Solution
An augmented reality head-up display system that includes an audio microphone array, vehicle sensors, off-vehicle inputs, and a driver position tracking device, which classifies audio data to identify relevant events and displays graphics on the windscreen indicating the event's location and context, allowing the driver to focus on the road while being aware of important environmental sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If audio event information is displayed on the windscreen, then driver awareness is enhanced, but device complexity increases
Solution Approach 1:
The system segments audio information processing by using multiple microphones to capture different spatial audio signals, classifying them into distinct audio events (e.g., sirens, horns, glass breaking) and displaying them as separate graphical indicators on the windscreen. This segmentation allows comprehensive audio monitoring while maintaining organized, non-overwhelming visual presentation.
Solution Approach 2:
The audio processing system serves multiple functions: it detects various types of audio events, determines their spatial locations, classifies their relevance to driving safety, and generates appropriate visual notifications. This multi-functionality consolidates what would otherwise require separate systems into a single integrated audio awareness platform.
2Measurement precision
If multiple sensors and processing components are added to classify audio events, then audio event classification accuracy is improved, but device complexity increases
Solution Approach 1:
The audio classification process is segmented into distinct stages: raw audio capture by multiple microphones, signal processing to identify acoustic patterns, classification of audio events into predefined categories, and spatial location determination. Each stage processes specific aspects of the audio data independently, improving classification accuracy while keeping the overall system architecture manageable through modular organization.
Solution Approach 2:
The system introduces an audio processing unit as an intermediary between the microphones and the display system. This intermediary component performs sophisticated audio analysis, pattern recognition, and event classification, enabling high measurement precision for audio event identification without requiring direct complex integration between all system components.
3Loss of information
If audio event information is provided through traditional displays, then driver awareness is improved, but the driver must look away from the road
Solution Approach 1:
The system transitions audio event information from traditional two-dimensional display formats to a three-dimensional spatial representation projected on the windscreen. Audio events are displayed as graphical indicators positioned according to their actual spatial locations relative to the vehicle, creating a depth dimension that naturally integrates with the driver's forward view and eliminates the need to shift attention to separate displays.
Solution Approach 2:
The windscreen serves as an intermediary surface that overlays audio event information directly into the driver's field of view. This intermediary display medium allows information delivery without interrupting the driver's visual attention to the road, as the notifications appear superimposed on the actual environment rather than requiring separate viewing.
Data Source
AI summary
An augmented reality head up display system includes an audio microphone array, a driver position tracking device, and an augmented reality head up display. The augmented reality head up display system also includes a controller in electronic communication with the audio microphone array, the driver position tracking device, and the augmented reality head up display, where the controller is programmed to: receive audio data from the audio microphone array corresponding to audio detected by the audio microphone array, classify the audio data as corresponding to an audio event occurring in an environment surrounding the vehicle, and display a graphic corresponding to the audio event on the windscreen of the vehicle using the augmented reality head up display and input from the driver position tracking device.