Multi-Vehicle Surround Sound via V2V Position Sync
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Solution Overview
Problem
Current surround sound systems using wireless communication terminals are limited in their functionality, as they cannot be used during calling times due to the characteristics of these terminals, restricting their usability.
Innovation Solution
Implementing a method for a surround sound system across multiple vehicles by using GPS position information and V2V communication to identify and output audio signals from corresponding sound sources based on synchronization signals, allowing each vehicle to determine its position relative to other vehicles and share RSS, DOA, and TOA data to synchronize audio output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication terminals are used to implement surround sound, then audio signals can be transmitted between devices, but the system becomes unusable during calling times due to terminal characteristics
Solution Approach 1:
The patent introduces vehicle-to-vehicle (V2V) communication as an intermediary channel that bypasses the limitations of wireless communication terminals during calling times. The surround sound system uses dedicated V2V communication channels to transmit audio signals between vehicles, allowing the system to remain operational even when terminal-based communication is restricted.
Solution Approach 2:
The system separates the communication function into different channels: V2V communication for surround sound audio transmission and terminal communication for calling functions. This segmentation allows each channel to operate independently, enabling the surround sound system to function during calling times without interfering with telephone operations.
2Adaptability or versatility
If multiple vehicles participate in surround sound system, then immersive audio experience is enhanced, but system complexity increases due to GPS position information processing and synchronization requirements
Solution Approach 1:
The patent utilizes GPS position information, which vehicles already possess for navigation purposes, to determine spatial relationships for surround sound positioning. By reusing existing GPS data for audio spatial distribution, the system avoids adding dedicated positioning hardware or complex position processing mechanisms, thereby reducing overall system complexity while maintaining multi-vehicle surround sound capability.
Solution Approach 2:
The system employs a master vehicle that receives position information from all participating vehicles and generates synchronization signals based on relative positions. This feedback mechanism allows automatic adjustment of audio signal timing and positioning, simplifying the coordination complexity by centralizing the synchronization control logic in the master vehicle rather than requiring complex peer-to-peer synchronization protocols.
Data Source
AI summary
The present inventive concept relates to a method for implementing surround sound system using a plurality of vehicles, which implements the surround sound by outputting a sound source corresponding to a surround sound node of itself according to a synchronization signal after each vehicle located in a local area (AVN system: Audio, Video, Navigation system) identifies the surround sound node of itself based on its position.