Vehicle Audio Routing for Feedback Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicle communication systems often suffer from acoustic feedback due to complex reverberations and transient vehicle noises, making it difficult for passengers to understand speech signals, especially when multiple audio devices are used in vehicles.
Innovation Solution
A vehicle communication system that detects wearable communication devices and selectively routes audio data to optimize signal processing, decoupling inputs and outputs near the device to reduce feedback and improve signal quality, using signal processing logic and a controller to manage audio data transmission and reception through various protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If suppression and/or compensation filters are used to reduce feedback, then acoustic feedback is reduced, but system complexity increases and reconfiguration time increases causing audible interference
Solution Approach 1:
The patent extracts and removes the problematic feedback path by detecting wearable communication devices and decoupling inputs and outputs near these devices. This eliminates the need for complex suppression filters by physically separating the feedback loop components rather than attempting to filter the feedback signal.
Solution Approach 2:
The controller acts as an intermediary that detects wearable devices and dynamically routes audio signals through alternative paths. By introducing this intelligent routing mechanism, the system avoids direct feedback paths without requiring complex filter configurations.
2Object-affected harmful factors
If suppression and/or compensation filters are used to reduce feedback, then acoustic feedback is reduced, but reconfiguration time increases causing audible interference
Solution Approach 1:
The system performs preliminary detection of wearable communication devices and pre-configures alternative audio routing paths before feedback becomes problematic. This advance preparation eliminates reconfiguration delays by having ready-to-use alternative signal paths already established.
Solution Approach 2:
The patent implements dynamic, real-time routing of audio signals based on detected wearable device locations. Rather than static filter configurations that require reconfiguration, the system dynamically adapts signal paths, allowing instantaneous response to changing conditions without audible interference.
3Adaptability or versatility
If multiple audio devices are used in vehicles, then audio functionality is enhanced, but acoustic feedback increases making speech signals difficult to understand
Solution Approach 1:
The patent segments the audio system into multiple independent zones based on detected wearable device locations. Each zone can be independently controlled with its own input-output routing, allowing the system to maintain enhanced audio functionality while isolating feedback-prone areas from each other.
Data Source
AI summary
A vehicle communication system detects the presence of a passenger wearable communication device. The system receives audio signals from multiple sources inside or outside of a vehicle. The system processes the signals before routing the signals to multiple destinations. The destinations may include wearable personal communication devices, front and/or rear speakers, and/or a remote mobile device.