Vehicle Voice Output Timing Control via Musical Interval Detection
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Solution Overview
Problem
Existing vehicle navigation systems require significant arithmetic processing to accurately predict the vehicle's location during intervals between musical pieces for effective voice guidance, which is resource-intensive and prone to errors due to changing road conditions and vehicle speed.
Innovation Solution
A voice information output system that includes a determiner to identify specified output points for voice information, a musical piece interval detector to identify intervals between musical pieces, and an output controller to adjust the timing of voice information output based on whether the specified output point is reached during a musical piece or interval, reducing the need for extensive arithmetic processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system performs accurate prediction of vehicle traveling location during musical piece intervals, then voice guidance execution accuracy is improved, but arithmetic processing load increases significantly
Solution Approach 1:
The system performs preliminary actions by detecting musical piece intervals in advance and preparing voice guidance output timing beforehand. The determiner identifies whether voice information has a specified output point, and the musical piece interval detector pre-detects intervals before they occur, allowing the system to prepare output timing without heavy real-time arithmetic processing when the vehicle location prediction would be most demanding.
Solution Approach 2:
The invention extracts the voice guidance output control function from the complex vehicle location prediction system. By separating the voice information output timing control from the arithmetic-intensive traveling location prediction, the system can provide accurate voice guidance without requiring the full computational burden of continuous location prediction during musical piece intervals.
2Measurement precision
If the system continuously monitors vehicle speed and position for accurate location prediction, then voice guidance timing accuracy is improved, but energy consumption increases
Solution Approach 1:
The system employs periodic action by monitoring vehicle parameters only at relevant moments - specifically when musical piece intervals are detected or when voice information output is required. Rather than continuous monitoring, the determiner and musical piece interval detector activate periodically based on audio playback events, reducing energy consumption while maintaining voice guidance timing accuracy when it matters most.
3Ease of operation
If the system adjusts voice information output timing dynamically based on musical piece intervals, then user experience is improved, but system complexity increases
Solution Approach 1:
The invention introduces an intermediary approach by using the musical piece interval detector as a mediator between the audio playback system and the voice information output system. This intermediary component simplifies the control logic by providing clear interval timing signals that the output controller can use to adjust voice guidance timing, avoiding the need for complex real-time coordination between multiple subsystems.
Data Source
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AI summary
A voice output unit is mounted on a vehicle. A determiner determines whether or not voice information generated in connection with traveling of the vehicle and output from the voice output unit is information for which an output point of the voice information is specified. A musical piece interval detector detects a time point at which there arrives an interval between musical pieces being reproduced, which are output from the voice output unit. An output controller changes an output time to the arrival time of the interval between musical pieces when the output time, which is specified for the voice information determined by the determiner as not being information for which the output point is specified, arrives at a time point other than the interval between musical pieces.