Vehicle Notification Sound Differentiation via Content Identifier
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Solution Overview
Problem
Conventional vehicle-mounted devices cannot differentiate the content of received information beyond determining the existence and urgency of emergency information, as they rely solely on warning sounds, which do not convey the type of content.
Innovation Solution
The vehicle-mounted device employs a system with communication, audio reproduction, and control means to produce varying notification sounds based on identifiers, events, and text information within the received content, allowing users to distinguish between different types of content through distinct audio cues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a warning sound is used to notify emergency information, then the user can determine the existence and urgency of emergency information, but the user cannot know the type of content of the information
Solution Approach 1:
The notification sound is segmented into multiple components: a base warning sound for emergency notification, and superimposed variable elements (pitch, tone, rhythm) that encode different content types. This segmentation allows the same fundamental alert to convey multiple layers of information simultaneously.
Solution Approach 2:
Different local qualities (pitch, tone, rhythm characteristics) are applied to the notification sound depending on the content type. For example, high-pitch sounds for weather alerts, low-pitch for traffic information, creating distinct acoustic signatures for different information categories while maintaining the emergency notification function.
2Adaptability or versatility
If various content information is received from center apparatus, then the information comprehensiveness is improved, but the user cannot differentiate the content types using conventional warning sounds
Solution Approach 1:
The notification sound parameters (pitch, tone, rhythm, duration) are dynamically changed based on the content type of the received information. This allows the system to handle diverse content categories (weather, traffic, events, advertisements) with distinct acoustic characteristics, enabling users to differentiate content types through sound alone.
Solution Approach 2:
The notification sound acts as an intermediary that translates diverse content information types into distinguishable acoustic signals. The control unit processes the content type and selects appropriate sound parameters, serving as a mediator between the varied information sources and the user's perception.
3Measurement precision
If the brightness of display unit is changed according to degree of urgency, then the user can determine urgency level, but the user cannot identify the type of content information
Solution Approach 1:
The system merges multiple notification methods: display brightness changes for urgency indication and differentiated notification sounds for content type identification. This combination allows simultaneous conveyance of both urgency level and information category, resolving the limitation of using only visual or only auditory signals.
Data Source
AI summary
Upon reception of content information (step S1), a control unit decides a different notification sound in accordance with an identifier attached to the received content information (step S4). The control unit causes a reproduction unit (5) to reproduce the decided notification sound. Thus, the user can guess the content of the received content information.