Vehicle External Sound Virtualization Through Cabin Speakers
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Solution Overview
Problem
The excessive sound insulation and noise reduction in vehicles hinder the perception of external vehicle sounds, leading to reduced awareness of important information and compromised driving safety.
Innovation Solution
A method and apparatus that utilize vehicle external microphones to capture sound signals in a pass-through mode, process them to generate virtualizing instructions, and output these signals through in-vehicle speakers to simulate external sounds, enhancing the perception of relevant external sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sound insulation and noise reduction performance are improved, then driving comfort and quietness are enhanced, but external vehicle sound perception is blocked
Solution Approach 1:
The patent introduces external microphones as intermediary devices positioned outside the vehicle to capture external sound signals. These microphones act as mediators between the external environment and the vehicle interior, transmitting sound information through the soundproof barrier without compromising the insulation performance. The captured signals are then processed and transmitted to speakers inside the vehicle, enabling occupants to perceive external sounds while maintaining the soundproof environment.
2Object-affected harmful factors
If sound insulation measures are implemented, then noise reduction is achieved, but external sound information becomes inaccessible
Solution Approach 1:
The patent segments the sound transmission function from the sound insulation structure. Instead of trying to make the soundproofing material itself transparent to sound, the system separates the functions: the sound insulation barrier remains intact for noise reduction, while external microphones positioned outside capture external sounds, and internal speakers reproduce them inside the vehicle. This segmentation allows both noise reduction and external sound perception to coexist.
3Ease of operation
If passive sound insulation is used, then quiet driving experience is provided, but active sound perception is reduced
Solution Approach 1:
The patent makes the audio system multi-functional by enabling it to serve both comfort and safety purposes. The same speaker system that plays entertainment audio also reproduces external vehicle sounds for safety awareness. The external microphones serve dual purposes of capturing ambient noise for comfort while also detecting important external sounds for safety. This universality allows the system to provide both quiet driving experience and enhanced sound perception.
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
Effectively restores external vehicle sounds within a soundproof environment, improving driving safety and accessibility to important voice information.
Implementation Method 1
controlling a vehicle external microphone to enter an external vehicle sound acquisition state
Implementation Method 2
control the in-vehicle speakers to output a virtual sound signal corresponding to the target external vehicle sound signal
Data Source
AI summary
Provided are a method, device, and apparatus for virtualizing an external vehicle sound, and readable storage medium. The method includes: controlling a vehicle external microphone to enter an external vehicle sound acquisition state when a vehicle is in a pass-through mode; generating an external vehicle sound virtualizing instruction according to a target external vehicle sound signal when an external vehicle sound signal is received in real-time; sending the external vehicle sound virtualizing instruction to in-vehicle speakers to control the in-vehicle speakers to output a virtual sound signal. The vehicle external microphones are used to acquire sound and the in-vehicle speakers are controlled to simulate the external vehicle sound, so that the exterior important sound information can be effectively received by a person inside the vehicle, thereby improving the safety of driving and the accessibility of the important voice information of the person outside the vehicle.