Vehicle Side Wall Speaker Ceiling Reflection
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Solution Overview
Problem
Current vehicle audio systems fail to provide optimal sound perception for passengers, as sound waves often lack diffusion and envelopment, leading to a less immersive experience due to directional sound emission.
Innovation Solution
The implementation of a speaker arrangement in the vehicle's side wall with speakers positioned at different heights, where the main sound emission direction is directed towards the ceiling, utilizing an audio processor to provide delayed audio signals to achieve a diffuse sound cloud within the passenger compartment, and optionally using a sound wave reflector to enhance sound reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If speakers are positioned in the side wall with main sound emission direction directed to the ceiling, then sound diffusion and envelopment are improved, but the device complexity increases due to multiple speakers at different heights and audio processing requirements
Solution Approach 1:
The audio system is segmented into multiple independent speaker units positioned at different heights in the side wall, each capable of receiving and emitting sound waves. This segmentation allows the system to create a diffuse sound cloud through coordinated emission from multiple locations, improving sound perception quality while maintaining modular simplicity
Solution Approach 2:
The sound emission is redirected from the traditional horizontal direction toward the ceiling, utilizing the vertical dimension. By directing sound waves upward to reflect off the ceiling, the system creates a three-dimensional sound field that envelops passengers, transforming a two-dimensional sound propagation into a three-dimensional experience
2Reliability
If the main sound emission direction is directed to the ceiling, then a diffuse sound cloud is created, but the sound waves may not directly reach passengers
Solution Approach 1:
Sound waves are emitted toward the ceiling in advance before reaching the passenger area. By directing sound upward first, the system allows the ceiling to act as a reflection surface, causing sound waves to subsequently reach passengers from multiple angles after reflection, creating a diffuse sound cloud effect
Solution Approach 2:
The ceiling serves as an intermediary surface between the speakers and passengers. Sound waves from the speakers are directed to the ceiling, which reflects and scatters the sound in multiple directions, including toward the passengers. This intermediary approach transforms direct sound emission into diffuse sound distribution
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
This configuration enhances sound perception by creating a diffuse sound cloud that envelops passengers from both sides and above, improving the overall audio experience by scattering sound waves in multiple directions, while maintaining directional sound perception.
Implementation Method 1
a sound wave emitted by the speaker along the main sound emission direction hits the ceiling of the vehicle and is reflected by the ceiling of the vehicle
Data Source
AI summary
A vehicle includes a side wall, a ceiling and a speaker arrangement including at least one speaker. The speaker arrangement is positioned in or at the side wall and is configured such that a main sound emission direction of the speaker arrangement is directed to the ceiling.