Vehicle Cabin Spatial Audio for Dynamic Engine Soundscapes
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Solution Overview
Problem
Conventional audio rendering methods for vehicle sounds in vehicle interiors lack realism, fail to account for dynamic and spatial characteristics, and do not allow for user customization, resulting in a less engaging driving experience.
Innovation Solution
A system that uses sensor inputs to dynamically recreate vehicle sounds, adjusting pitch, volume, and spatial positioning, allowing users to select and customize the soundscape, including activating seat shakers for physical feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional audio rendering methods are used to deliver vehicle sounds through speakers, then the system is simple and easy to implement, but the soundscape is flat, static, and lacks spatial realism
Solution Approach 1:
The audio system segments the soundscape into distinct spatial zones (front, rear, left, right, center) and assigns specific sounds to specific spatial locations. This segmentation allows precise control over where each sound originates in the virtual cabin environment, achieving spatial audio precision while maintaining manageable system complexity through modular sound zone management.
Solution Approach 2:
The system transitions from conventional one-dimensional audio delivery to three-dimensional spatial audio rendering by adding spatial location as a new dimension. Sounds are positioned in virtual 3D space within the cabin, creating immersive spatial realism without requiring physically complex audio hardware, thus improving manufacturing precision while controlling device complexity.
2Adaptability or versatility
If static audio rendering is used, then the system is simple to implement, but it fails to reproduce the dynamic characteristics of combustion engine vehicles
Solution Approach 1:
The audio system dynamically adapts the soundscape based on real-time vehicle operating conditions such as engine RPM, acceleration, and cabin environment. Sound parameters including pitch, volume, and spatial position are continuously adjusted to match the dynamic characteristics of combustion engine vehicles, achieving high adaptability while using computationally efficient real-time processing rather than complex hardware modifications.
Solution Approach 2:
The system changes audio parameters (pitch, volume, spatial location, reverberation) in real-time based on sensor inputs from the vehicle. This parameter-based adaptation allows the soundscape to respond to varying driving conditions, achieving versatility in reproducing different vehicle states without requiring complex reconfiguration of the audio system hardware.
3Adaptability or versatility
If conventional audio methods are used, then the system is easy to implement, but it does not allow user customization of soundscape attributes
Solution Approach 1:
The audio system provides self-service customization capabilities through user-friendly interfaces that allow drivers to adjust soundscape parameters without technical expertise. Users can modify pitch, volume, and spatial positioning of individual sounds through intuitive controls, achieving user customization capability while avoiding complex system configuration through automated parameter application based on user selections.
4Manufacturing precision
If unison sound delivery is used through speakers, then the system is simple and straightforward, but it creates a flat and unconvincing soundscape
Solution Approach 1:
The system segments sound delivery into multiple spatial zones rather than using unison delivery. Each zone (front, rear, left, right, center) independently reproduces sounds appropriate to its location, creating spatial precision and realism. This segmentation is implemented through standard multi-speaker configurations already present in vehicles, maintaining ease of operation while significantly improving spatial positioning precision.
Data Source
AI summary
In various embodiments, a computer-implemented method for reproducing a simulated soundscape within a first vehicle, comprises receiving selection of the simulated soundscape within a vehicle cabin associated with the first vehicle, receiving a sensor input associated with the first vehicle, identifying a soundscape element based on the selected simulated soundscape, determining a sound corresponding to the soundscape element based on the sensor input, determining a location within the cabin of the plurality of sounds based on the selected simulated soundscape, and causing playback of the sound within the vehicle cabin based on the location.