Method for generating audio signal to simulate noise of internal combustion engine of e.g. electric motor vehicle, involves generating audio signal from selected series of duty cycle values by constructing pulse width modulated signal

摘要

The method involves receiving a position value of accelerator pedal of a vehicle and a speed value of the vehicle, and selecting a series of duty cycle values in a reference table (25) and from the position and speed values. An audio signal (SG) is generated from the selected series of duty cycle values by constructing a pulse width modulated signal comprising a set of crenels, where the duty cycle of each of the crenels corresponds to respective selected duty cycle values. The generated audio signal is amplified to obtain an amplified audio signal (SA). An independent claim is also included for a device for generating an audio signal for a car.