Virtual Engine Startup Sound Control for Cranking-to-Explosion Timing
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Solution Overview
Problem
Conventional control devices for battery electric vehicles do not generate a virtual engine sound based on the operation of a startup input device, leading to a lack of reproducibility of the startup sound of the engine, which includes cranking and explosion sounds.
Innovation Solution
A vehicle control system and method that includes storage devices for startup sound source data, processors for generating virtual engine sounds, and a startup input device, which switches from cranking to explosion sounds based on the duration of the startup operation signal, reproducing the transition from cranking to the first explosion of the engine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional control devices do not generate virtual engine sound based on startup input device operation, then the system complexity is reduced, but the reproducibility of engine startup sound is lost
Solution Approach 1:
The patent uses audio data to copy and reproduce the engine startup sound (including cranking sound and explosion sound) in the battery electric vehicle cabin. Instead of having a real engine, the system creates a virtual copy of the engine sound experience through audio playback, resolving the contradiction by maintaining sound reproducibility without the physical complexity of an actual engine startup mechanism.
2Measurement precision
If the system switches from cranking sound to explosion sound based on input duration time, then the accuracy of startup sound reproduction is improved, but the control complexity increases
Solution Approach 1:
The system performs preliminary classification of startup sound types (cranking sound vs. explosion sound) based on the detected input duration time. By pre-establishing the relationship between input duration thresholds and corresponding sound types, the system achieves accurate startup sound reproduction without requiring complex real-time analysis during the actual startup process.
Solution Approach 2:
The patent dynamically selects different audio data (cranking sound or explosion sound) based on the measured input duration time of the startup input device. This dynamic switching mechanism allows the system to adapt the reproduced sound to match the actual engine startup stage, improving accuracy while keeping control logic manageable through time-based differentiation.
Data Source
AI summary
When the startup operation signal from the startup input device is input, a startup sound output processing for outputting the startup sound of the virtual engine generated based on the startup sound source data to the speaker is performed. The startup sound source data includes cranking sound data generated with cranking of the virtual engine and explosion sound data after the first explosion of the virtual engine. The startup sound output processing includes counting an input duration time of the startup operation signal, and switching from the reproduction of the startup sound based on the cranking sound data to the reproduction of the startup sound based on the explosion sound data when the input duration time exceeds a regulation time.