Vehicle Sound Presentation Attenuating Ambient Noise
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Solution Overview
Problem
Existing vehicle information presentation systems struggle to effectively convey information about nearby vehicles without overwhelming the occupant with pressure-inducing audio notifications, as they often mix caution and warning sounds, making it difficult for drivers to distinguish between different audio notifications.
Innovation Solution
A vehicle information presentation device that includes an acquisition section for surrounding vehicle data, a sound pick-up section to capture ambient sounds, and a presentation section using multiple sound sources to attenuate specific sounds from the direction of nearby vehicles, thereby presenting information without increasing pressure on the occupant by adjusting sound levels based on importance and travel states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If audio notification from virtual sound source is used to present information about nearby vehicles, then the occupant becomes aware of the vehicle's position, but the occupant feels pressured and cannot distinguish between different audio notifications
Solution Approach 1:
The patent segments the audio information by direction, separating notifications from different spatial locations. The sound pickup section captures sounds from multiple directions, and the presentation section processes them independently based on their origin direction, allowing the occupant to distinguish between vehicles in different positions without confusion.
Solution Approach 2:
The patent applies local quality by adjusting audio characteristics based on the direction of the sound source. Different attenuation levels and presentation methods are applied to sounds from different directions (front, rear, left, right), creating direction-specific audio qualities that help the occupant identify vehicle positions and reduce overall pressure.
2Loss of information
If multiple audio notifications are emitted simultaneously, then comprehensive information is provided, but the occupant cannot distinguish between caution sounds, warning sounds, and vehicle information
Solution Approach 1:
The patent segments audio information by spatial direction, processing caution sounds, warning sounds, and vehicle information separately based on their origin directions. This directional segmentation allows comprehensive information delivery while maintaining distinguishability through spatial separation.
Solution Approach 2:
The sound pickup section and direction determination section act as intermediaries that classify and route different audio notifications to appropriate presentation channels based on their direction of origin, enabling the occupant to distinguish between multiple simultaneous notifications.
3Object-affected harmful factors
If sound attenuation is applied to reduce pressure, then the occupant feels less pressure, but information delivery effectiveness may be reduced
Solution Approach 1:
The patent applies different attenuation levels locally based on the direction and importance of the sound source. Sounds from certain directions or representing critical information receive different attenuation treatment than others, reducing overall pressure while preserving essential information delivery effectiveness.
Solution Approach 2:
The attenuation level is dynamically adjusted based on the direction of the sound source and the type of information being conveyed. The system adaptively modifies audio characteristics in real-time to balance pressure reduction with information delivery effectiveness.
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
The system effectively presents information about nearby vehicles to the driver without causing pressure, by attenuating ambient sounds from the direction of the other vehicle, allowing for clear and precise awareness of the vehicle's position and travel state while minimizing sensory overload.
Implementation Method 1
plural sound sources configured to emit sound toward the occupant
Implementation Method 2
attenuating sound from the other vehicle direction toward the ego vehicle out of the sound heard by the occupant with sound emitted from at least one of the sound sources
Data Source
AI summary
A vehicle information presentation device that includes: an acquisition section configured to acquire information about the surroundings of an ego vehicle; a sound pick-up section configured to pick up sound heard by an occupant; a plurality of sound sources configured to emit sound toward the occupant; and a presentation section that, in a case in which another vehicle has been detected from the surroundings information acquired by the acquisition section, presents the occupant with information related to the other vehicle using sound emitted from at least one of the plurality of sound sources by attenuating, from among sound heard by the occupant, sound directed from the other vehicle toward the ego vehicle, based on audio pick-up information on sound picked up by the sound pick-up section.