Vehicle Communication System Using Voice Localization
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Solution Overview
Problem
Existing communication systems in vehicles face challenges in delivering spoken content to passengers who are not actively trying to communicate, such as a child in the rear seat when the parent in the driver's seat is trying to give a warning.
Innovation Solution
A communication support system with a microphone, sound output device, recognizer, and controller that generates and localizes sound to simulate a different speaker's voice, directs it to the appropriate passenger based on seat positions, and uses image analysis to determine if the recipient is awake and responsive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver speaks loudly to communicate with the rear seat passenger, then the communication effectiveness is improved, but the driving safety deteriorates
Solution Approach 1:
The system introduces an intermediary device (speaker system) that transmits the driver's voice to the rear seat passenger without requiring the driver to speak loudly. The controller captures the driver's speech through a microphone, processes it, and outputs it through speakers positioned near the rear seat, thereby mediating the communication between driver and passenger while maintaining normal driving behavior
Solution Approach 2:
The communication function is segmented from the driver's direct speech act. Instead of the driver directly communicating through loud speech, the system divides the communication process into separate functions: voice capture by microphone, signal processing by controller, and directed output by speakers, allowing the driver to maintain normal speech levels while ensuring effective communication
2Object-affected harmful factors
If the driver focuses on driving without speaking loudly, then the driving safety is improved, but the communication effectiveness deteriorates
Solution Approach 1:
The system replaces the mechanical approach of loud speech transmission with an electronic sound transmission system. The microphone, controller, and speaker system substitute for the need for loud vocal projection, using electronic signal processing to deliver clear communication to the rear seat passenger while the driver maintains normal speech levels and focuses on driving
Solution Approach 2:
An intermediary electronic communication system is introduced between the driver and rear seat passenger. The system captures the driver's normal speech through a microphone, processes the signal through a controller, and transmits it through speakers positioned near the passenger, thereby ensuring effective communication without requiring the driver to divert attention from driving or increase vocal volume
Data Source
AI summary
Provided is a communication support system including: a microphone that is mounted in an interior of a vehicle; a sound output device that is mounted in the interior of vehicle; a recognizer configured to recognize spoken content included in sound data collected by the microphone; and a controller configured to generate a delivery message to be delivered from a passenger who has output the collected sound to another passenger on the basis of a result of the recognition performed by the recognizer, generates sound based on the generated delivery message, and causes the sound output device to output the generated sound toward the other passenger.