Vehicle Audio Alert System Multi-Frequency Output
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Solution Overview
Problem
Vehicles often use audio signals for alerts, but individuals with hearing impairments may not be able to hear these signals if they fall outside the user's audible frequency range, leading to exclusion and increased risk of missing important notifications.
Innovation Solution
A system that determines if a vehicle alert is needed and outputs an audio signal at a range of frequencies from a minimum to a maximum value, ensuring that passengers with varying hearing abilities can receive the alert, using multiple audio devices to output frequencies simultaneously or sequentially.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio signals are output at a single frequency, then the audio alert system is simple and energy efficient, but passengers with hearing impairments may not be able to hear the alert
Solution Approach 1:
The audio alert signal is segmented into multiple frequency components. Instead of outputting a single frequency, the system divides the alert into several frequency bands (e.g., low, mid, high frequencies) and outputs them simultaneously or sequentially through audio devices, ensuring that at least one frequency component is audible to passengers with various hearing impairments.
Solution Approach 2:
The system changes the frequency parameter of the audio output. By varying the frequency content of the alert signal across multiple values, the system adapts to different hearing capabilities of passengers. The processor dynamically adjusts which frequencies are emitted based on the segmented approach, making the alert reliable for a broader range of users.
2Adaptability or versatility
If audio signals are output at multiple frequencies, then passengers with hearing impairments can hear the alert, but the audio output complexity increases
Solution Approach 1:
The system segments the frequency spectrum into multiple bands and processes each band separately. This segmentation allows the system to target specific frequency ranges that are more likely to be audible to passengers with different types of hearing losses, improving adaptability while managing complexity through modular processing.
Solution Approach 2:
The audio alert system is designed to serve multiple functions: it can output alerts for passengers with normal hearing, hearing loss in specific frequency ranges, or complete hearing impairment. By making the system universal and adaptable to various hearing conditions through multi-frequency output, it increases versatility without requiring separate systems for different user groups.
3Ease of manufacture
If audio alerts are provided at a single frequency, then the system is easy to implement, but important notifications may be missed by passengers
Solution Approach 1:
The alert information is segmented across multiple frequency channels rather than being concentrated at a single frequency. This ensures that the complete alert information is transmitted through multiple pathways, reducing the risk that any single frequency blockage (due to hearing impairment) will result in information loss.
Solution Approach 2:
The system changes the frequency parameter of the audio output to match the hearing capabilities of different passengers. By adjusting which frequencies are used to convey alert information, the system prevents information loss that would occur if a fixed single frequency were used that falls outside a passenger's audible range.
Data Source
AI summary
System, methods, and other embodiments described herein relate to providing audio information in a vehicle. In one embodiment, a method includes determining whether at least one vehicle alert is to be provided by the vehicle, and outputting, in response to determining that the at least one vehicle alert is to be provided, an audio signal for the at least one vehicle alert at a plurality of frequencies. The plurality of frequencies range from a predetermined minimum frequency value to a predetermined maximum frequency value.