Bluetooth Audio Adaptation via Telematics Intermediary
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Solution Overview
Problem
Current vehicle OEM audio devices cannot adjust default tones and volumes based on the type of vehicle and mobile device, leading to inconsistent sound quality and customer dissatisfaction during Bluetooth streaming.
Innovation Solution
A system that includes a head unit with a Bluetooth module and telematics center to acquire device and vehicle type information, optimize sound quality by calculating and applying correction values for bass, middle, and treble volumes, and minimize noise, ensuring optimized sound reproduction regardless of device or vehicle type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If OEM audio devices use fixed default tones and volumes, then device complexity is reduced, but sound quality adaptability to different vehicle and mobile device types deteriorates
Solution Approach 1:
The patent introduces a telematics center as an intermediary between the head unit and the cloud server. The telematics center acquires vehicle type information and mobile device type information, then transmits these to the server for sound quality optimization analysis. This intermediary structure allows the head unit to maintain relative simplicity while achieving adaptive sound quality through external processing.
Solution Approach 2:
The system performs preliminary actions by acquiring vehicle type information and mobile device type information before actual Bluetooth streaming occurs. The telematics center collects this information in advance and transmits it to the server, which prepares optimized sound quality parameters beforehand. When Bluetooth streaming starts, the optimization is already in place, avoiding real-time complexity.
2Manufacturing precision
If sound quality optimization is performed for each vehicle and mobile device combination, then sound quality is improved, but processing time and data transmission increase
Solution Approach 1:
The system performs sound quality optimization analysis in advance by transmitting vehicle type information and mobile device type information to the server before Bluetooth streaming begins. The server processes this information and returns optimized sound quality parameters, so that when streaming starts, the optimization is already complete, minimizing real-time processing delays.
3Measurement precision
If noise control measures are implemented during sound quality optimization, then sound quality measurement accuracy is improved, but system complexity and operational steps increase
Solution Approach 1:
The system uses the vehicle's existing door control function to achieve noise control during sound quality optimization. When optimization is needed, the system automatically closes the doors to create a closed environment, then plays test sounds to measure acoustic characteristics. After measurement, doors return to normal state. This self-service approach uses existing hardware functions rather than adding dedicated noise control equipment.
Data Source
AI summary
A system for optimizing Bluetooth streaming includes a head unit including a Bluetooth module for Bluetooth pairing with a mobile device. A logic module is configured to correct sound quality of a selected media file by optimizing the media file reproduced by the mobile device. The system can provide optimized sound quality of Bluetooth streaming to a plurality of drivers who use smartphones in a vehicle.