Patent ID: 11884209
Assignee: SOUND DESIGN LAB LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  G  Y | IPC B  G

Claim 7:
8. A non-volatile recording medium recording a sound signal generation program causing a computer to execute:
a step of acquiring operation amount data indicating an accelerator operation amount in an electric vehicle on which an electric motor for vehicle driving is mounted;
a step of acquiring running speed data indicating running speed of the electric vehicle;
a step of calculating a virtual running speed of a vehicle on which an engine of an internal combustion type is mounted;
a step of modifying the calculated virtual running speed on the basis of the acquired running speed data;
a step of calculating a virtual rotation speed of the engine on the basis of the modified virtual running speed; and
a step of generating an artificial engine sound signal indicating an artificial sound of the engine corresponding to a running state of the electric vehicle on the basis of the accelerator operation amount indicated by the acquired operation amount data and the calculated virtual rotation speed,
wherein the virtual running speed is calculated by excluding an influence of a gradient of a road on which the electric vehicle moves and an influence of braking resistance of the electric vehicle.