Patent ID: 11904772
Assignee: VOLVO CAR CORPORATION
Field: Other consumer goods (Other fields)
Classification: CPC B  G  H | IPC B  G  H

Claim 0:
1. A method of creating and providing an alert sound to be emitted by a specified electrified vehicle to fulfil Acoustic Vehicle Alerting System requirements for the specified vehicle, comprising the steps of:
selecting a specified vehicle;
recording exterior operational sounds of the vehicle during electric operation thereof;
subjectively evaluating interior noise frequency spectrum of the specified vehicle based on road noise frequency spectrum for the vehicle when the vehicle is in electrified operation during the recording step;
shaping an exteriorly emitted alert sound of vehicle operational sounds relying on the frequency spectrum of the recorded interior noise is to define optimal frequency bands and level range of the sound emitted from exterior vehicle mounted a first sound emitting unit so as to mimic the frequency spectrum of the recorded interior noise of the specified vehicle; and
emitting those selected and shaped recorded interior sounds from the first exterior sound emitting unit as the alert sound for the acoustic alert system for the specified vehicle so as meet alert sound requirements for that vehicle.