Simulated Gear-Shift Sound Mapping for Realistic EV Driving
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Solution Overview
Problem
Current simulated vehicle sound generation methods are unnatural as they only consider fixed threshold vehicle speeds for gear shifting, failing to account for varying operating conditions, resulting in an unsatisfactory driving experience for electric and hybrid vehicle drivers.
Innovation Solution
A method and system that map vehicle operating conditions to simulated gears based on throttle position and vehicle speed, configuring gear-shifting conditions with varying threshold vehicle speeds, allowing for realistic simulation of engine sounds during gear shifts by selecting and generating sound signals corresponding to changing gear conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed threshold vehicle speed is used for gear shifting simulation, then the system complexity is reduced, but the realism of simulated sound deteriorates
Solution Approach 1:
The patent applies dynamics by making the gear-shifting conditions dynamic rather than static. Instead of using fixed threshold vehicle speeds, the system configures gear-shifting conditions based on multiple operating parameters (throttle position, vehicle speed, gear type) that vary in real-time. This allows the simulated sound to adapt dynamically to different driving scenarios, significantly improving realism while managing system complexity through structured parameter mapping.
Solution Approach 2:
The patent implements parameter changes by varying the threshold vehicle speeds for gear shifting based on different operating conditions. Specifically, the threshold speeds are adjusted according to throttle position (different levels), vehicle speed ranges, and gear types (manual/automatic). This multi-parameter approach creates more realistic simulated gear-shifting sounds without requiring overly complex system architecture.
2Manufacturing precision
If multiple operating conditions are considered for gear shifting simulation, then the realism of simulated sound is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the gear-shifting simulation into distinct segments or categories based on operating conditions. It separates gear-shifting conditions into different groups: manual gear shifting, automatic gear shifting, and further subdivisions based on throttle position levels. This segmented approach allows the system to handle multiple operating conditions systematically, improving realism while preventing overall system complexity from becoming unmanageable through modular organization.
Solution Approach 2:
The patent implements universality by creating a multi-functional gear-shifting simulation system that can handle various operating conditions through a unified framework. The same basic simulation architecture serves multiple purposes: it processes different throttle positions, vehicle speed ranges, and gear types using consistent logic and parameter mapping. This universal approach enables the system to accommodate multiple operating conditions without proportionally increasing complexity.
3Manufacturing precision
If threshold vehicle speeds vary by throttle position, then the naturalness of simulated sound is improved, but the calculation complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring the gear-shifting conditions and threshold vehicle speeds for different throttle positions before actual operation. The system establishes the mapping between throttle positions, vehicle speeds, and gear-shifting thresholds in advance, storing these as configured parameters. During real-time operation, the system only needs to retrieve and apply the pre-determined thresholds based on current throttle position, significantly reducing calculation complexity while maintaining the naturalness of simulated sound.
Data Source
AI summary
The disclosure provides a method and a system for generating simulated engine sounds for simulated gear-shifting of a vehicle. The method may comprise mapping a plurality of operating conditions of the vehicle to a plurality of respective simulated gears, wherein each of the operating conditions is associated with a throttle position and a vehicle speed. The method may further comprise configuring a plurality of simulated gear-shifting conditions based on threshold throttle positions and threshold vehicle speeds for simulated gear-shifting among respective simulated gears, wherein for each gear-shifting condition, at least some of the threshold vehicle speeds vary dependent of the throttle positions. The method may further comprise receiving conditions of the vehicle, and selecting a simulated gear in response to the operating conditions.