A vehicle sound generation device includes a sound control circuit that sets a plurality of frequencies according to a number of motor revolutions and sound pressures to be applied to the plurality of frequencies and generates a sound signal representing a synthetic sound including the sounds of the plurality of frequencies to which the set sound pressures have been applied, a speaker that outputs a sound according to the sound signal, generated by the sound control unit 12, and a travel situation estimation circuit that estimates a travel situation in which the driver accelerates or decelerates a vehicle at a rate below a predetermined threshold. The sound control circuit generates the sound signal representing only the single sound of the frequency in a range from 400 Hz to 900 Hz among the sounds of the plurality of frequencies when the travel situation is estimated.
VEHICLE SOUND GENERATION DEVICE
22.07.2021
Patent
Elektronische Ressource
Englisch
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler |
SOUND GENERATION DEVICE, SOUND GENERATION DEVICE-MOUNTED VEHICLE, AND SOUND GENERATION METHOD
Europäisches Patentamt | 2022
|