Vehicle Advisory Sound System Segmentation for Customization
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Solution Overview
Problem
Hybrid and electric vehicles require advisory sounds to alert pedestrians, but existing systems lack user customization while adhering to regulatory restrictions on frequency and volume, limiting the ability to tailor sounds to individual preferences while ensuring safety.
Innovation Solution
A sound output device with a warning sound generation section and a background sound generation section, controlled by a controller that combines sine waves and user-selectable sound sources to produce an advisory sound that can be modified by the user while meeting safety and regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If advisory sounds are standardized according to regulations, then safety and compliance are ensured, but user customization capability is lost
Solution Approach 1:
The advisory sound is divided into two distinct segments: a standardized warning sound component that must comply with regulations, and a customizable background sound component that allows user preference. This segmentation enables simultaneous compliance and customization by treating them as separate but combined elements.
Solution Approach 2:
The patent merges the standardized warning sound with user-selected background sounds to create a composite advisory sound. The warning sound provides the necessary safety function while the background sound adds user customization, achieving both regulatory compliance and adaptability in the final output.
2Reliability
If only standardized warning sounds are output, then regulatory compliance is maintained, but user preference adaptation is limited
Solution Approach 1:
The system dynamically adjusts the advisory sound by allowing users to select different background sound options while maintaining the standardized warning sound component. This dynamic configuration enables the system to adapt to user preferences without compromising the fixed regulatory requirements.
Solution Approach 2:
The advisory sound system is designed to serve multiple functions simultaneously: it maintains mandatory regulatory compliance through the standardized warning sound while also providing user customization through selectable background sounds, making the system both universally compliant and individually adaptable.
3Adaptability or versatility
If user-customizable sounds are allowed, then user satisfaction increases, but safety consistency may be compromised
Solution Approach 1:
Different parts of the advisory sound have different quality requirements: the warning sound component maintains fixed, standardized characteristics for safety consistency, while the background sound component allows variable characteristics for user customization. This local differentiation of quality requirements resolves the contradiction between consistency and customization.
Solution Approach 2:
By segmenting the advisory sound into a fixed warning sound portion and a variable background sound portion, the system ensures that the safety-critical warning sound remains consistent and compliant, while the non-critical background sound provides user customization without affecting safety consistency.
Data Source
AI summary
A sound output device for installation at a vehicle is provided with a warning sound generation section configured to generate a warning sound including at least one sine wave, a background sound generation section configured to generate a volume-adjusted first background sound based on a selected sound source, a controller configured to control selection of a sound source of the first background sound based on externally-supplied selection information, and a first synthesizer section configured to combine the warning sound and the first background sound and output the combination as a first advisory sound.