Vehicle Driving Sound Control System Using Voice Signal Filtering
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Solution Overview
Problem
Current vehicles lack the ability to generate a driving sound that meets a driver's personal preferences, as electric vehicles produce minimal noise and traditional engine sounds may not satisfy individual tastes, leading to an unsatisfactory driving experience.
Innovation Solution
A system comprising a voice signal input unit, filter generation unit, and driving sound control unit that extracts characteristics from a voice signal to generate a driving sound filter, allowing for customization of the vehicle's sound based on the driver's voice or preferred sounds, such as pets or wild animals, and adjusts the sound levels using sensors like RPM and throttle position sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If electric vehicle noise is reduced to minimal levels, then noise disturbance to driver concentration is improved, but emotional satisfaction and perceived vehicle dynamics deteriorate
Solution Approach 1:
The system changes the acoustic parameters of vehicle noise by using active noise generation to supplement minimal electric vehicle noise. The noise generation device adjusts frequency, amplitude, and timbre parameters to create artificial engine sounds that provide emotional satisfaction while maintaining low actual noise levels for driver concentration.
Solution Approach 2:
An intermediary noise generation device is introduced between the electric powertrain and the driver's auditory perception. This device synthesizes artificial engine sounds based on detected driving states and stored sound characteristics, mediating between the silent electric motor and the driver's expectation of vehicle dynamics and momentum.
2Adaptability or versatility
If traditional engine sound is used in electric vehicles, then emotional satisfaction and vehicle dynamics perception are improved, but noise disturbance and unpleasant indoor environment worsen
Solution Approach 1:
The system applies local quality by generating noise only in specific frequency ranges and at specific times corresponding to driving states. Rather than reproducing full-spectrum engine noise continuously, the device selectively generates artificial sounds only when needed for emotional satisfaction, keeping overall noise levels low while providing targeted acoustic feedback.
Solution Approach 2:
The noise generation operates periodically based on driving state changes rather than continuously. The control unit detects periodic patterns in acceleration, deceleration, and load changes, triggering artificial engine sounds only during these periodic events, thereby providing emotional satisfaction while minimizing overall noise disturbance.
3Adaptability or versatility
If custom engine sound synthesis is implemented, then driver preference satisfaction is improved, but device complexity and implementation cost worsen
Solution Approach 1:
The system performs preliminary action by pre-storing sound characteristics and timbre data from various engine types and models in a database during the design phase. When the vehicle operates, the control unit simply retrieves and plays back the appropriate pre-processed sound files based on detected driving states, avoiding complex real-time synthesis and reducing implementation complexity.
Solution Approach 2:
The system uses copying by storing recorded engine sound characteristics and timbre from specific vehicle models in a database. Instead of synthesizing sounds from scratch, the control unit copies and reproduces these pre-recorded characteristics, allowing drivers to experience authentic engine sounds from their preferred models without implementing complex synthesis algorithms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system enables the generation of a unique driving sound that enhances the driving experience by allowing drivers to personalize the sound according to their preferences, increasing satisfaction and emotional connection with the vehicle.
Implementation Method 1
The filter synthesis unit may select the at least one resonance frequency of the voice signal through spectral analysis of the voice signal.
Implementation Method 2
a speaker configured to output the new driving sound
Data Source
AI summary
Disclosed are a vehicle, an apparatus for generating a driving sound of the vehicle, and an apparatus and method for controlling a driving sound of the vehicle. The present invention intends to provide a driving sound of a vehicle having a characteristic desired by a driver. The vehicle according to an embodiment of the present invention includes: a voice signal input unit configured to receive a voice signal; a filter generation unit configured to extract a characteristic of the voice signal and generate a driving sound filter considering the characteristic of the voice signal; and a driving sound control unit configured to generate a default driving sound based on a driving state of the vehicle and generate a new driving sound obtained by applying the driving sound filter to the default driving sound.