Remote Hands-Free Audio Tuning via Dual-Link Feedback
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Solution Overview
Problem
Existing hands-free systems in vehicles struggle with background noise and echo issues, requiring on-site tuning and operation, which necessitates a driver and an additional person to monitor and adjust parameters, limiting remote optimization.
Innovation Solution
A system that allows real-time adjustment of hands-free audio system parameters using a two-link communication setup, where audio signals are transmitted to a remote location for evaluation, and commands are sent back to optimize the system, enabling remote tuning and operation with only two people, one driving and the other adjusting parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If on-site tuning and operation is conducted with multiple personnel present, then the hands-free system can be properly adjusted and monitored, but the complexity and resource requirements increase
Solution Approach 1:
A remote computing device acts as an intermediary between the hands-free system and the user. This intermediary receives audio signals from the vehicle, processes them remotely, and sends control commands back to the hands-free system, eliminating the need for multiple personnel to be physically present in the vehicle during tuning operations.
Solution Approach 2:
The patent replaces the mechanical approach of having multiple people physically present in the vehicle with an electronic/telecommunication system. Audio signals are transmitted electronically to a remote location, and control commands are sent back through the communication channel, substituting physical presence with electronic communication.
2Reliability
If a driver and additional personnel are required for on-site tuning, then proper system operation can be achieved, but the ease of operation decreases
Solution Approach 1:
The remote computing device serves as an intermediary that enables tuning operations to be performed from a remote location. The audio communication link acts as the intermediary channel, transmitting both audio signals for evaluation and control commands for system adjustment, thereby improving accessibility without compromising operational reliability.
3Ease of operation
If audio signals are monitored locally in the vehicle, then real-time adjustment is possible, but the ability to perform remote optimization is limited
Solution Approach 1:
The audio communication link serves as an intermediary that transmits audio signals from the vehicle to a remote computing device. This intermediary channel enables the audio signals to be evaluated remotely while maintaining the ability to perform real-time adjustments by sending control commands back through the same communication path.
Solution Approach 2:
The system implements a feedback loop where audio signals are transmitted to a remote location for evaluation, and the evaluation results are used to generate control commands that are sent back to the hands-free system. This feedback mechanism enables remote optimization while maintaining audio signal quality assessment capability.
Data Source
AI summary
Operating parameters of a hands-free audio system used with a wireless communication device in a moving vehicle are adjusted or tuned in real-time and requires only two persons: one to drive the vehicle and thus provide actual usage conditions with the hands-free audio system and one to remotely tune or adjust operating parameters to optimize far end audio quality. The system is remotely tuned by transmitting audio signals from the vehicle to the far end using a first communications link to the far end and sending adjustment commands to the vehicle from the far end via a second, data link between the far end and the vehicle. In one embodiment, DTMF signals received from inside or outside the vehicle can tune or be used to diagnose the hands-free system. Test measurements obtained from within and by the hands-free audio system can also be retrieved from a remote location.