Engine sound generation apparatus and method
AssigneeYamaha Corporation
InventorNaoki FUJIKAWA
Life of this patent
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Abstract
Change tendency data, indicative of a change tendency of a vehicle velocity, is obtained on the basis of acquired velocity information. Correction value of an accelerator opening degree is generated in accordance with the change tendency data and a current value of the accelerator opening degree is updated using the correction value, so that the accelerator opening degree is estimated. Then, engine sound data having a characteristic corresponding to the estimated accelerator opening degree are generated. When there has been a shift change, the current value of the accelerator opening degree, stored in the storage section, is updated to become a predetermined value, without the correction value being used.
Claims15
An engine sound generation apparatus comprising:
- a storage section in which a predetermined initial value is initially set as a current value of an accelerator opening degree and in which the current value is updatably stored;
- a velocity information acquisition section which acquires velocity information of an actual vehicle;
- a change tendency identification section which obtains change tendency data, indicative of a change tendency of a vehicle velocity, on the basis of the velocity information acquired by said velocity information acquisition section;
- an accelerator opening degree update section which changes the current value of the accelerator opening degree, stored in said storage section, on the basis of the change tendency data and thereby updates the current value of the accelerator opening degree with the changed value of the current value;
- and
- an engine sound data generation section which generates engine sound data having a characteristic corresponding to the current value of the accelerator opening degree stored in said storage section.
A computer-implemented method for generating engine sound, the computer including a storage section in which a predetermined initial value is initially set as a current value of an accelerator opening degree and in which the current value is updatably stored, said method comprising:
- a step of acquiring velocity information of an actual vehicle;
- a step of obtaining change tendency data, indicative of a change tendency of a vehicle velocity, on the basis of the velocity information acquired by said step of acquiring;
- a step of changing the current value of the accelerator opening degree, stored in the storage section, on the basis of the change tendency data and thereby updating the current value of the accelerator opening degree with the changed value of the current value;
- and
- a step of generating engine sound data having a characteristic corresponding to the current value of the accelerator opening degree stored in the storage section.
A computer-readable storage medium containing a program for causing a computer to perform a method for generating engine sound, the computer including a storage section in which a predetermined initial value is initially set as a current value of an accelerator opening degree and in which the current value is updatably stored, said method comprising:
- a step of acquiring velocity information of an actual vehicle;
- a step of obtaining change tendency data, indicative of a change tendency of a vehicle velocity, on the basis of the velocity information acquired by said step of acquiring;
- a step of changing the current value of the accelerator opening degree, stored in the storage section, on the basis of the change tendency data and thereby updating the current value of the accelerator opening degree with the changed value of the current value;
- and
- a step of generating engine sound data having a characteristic corresponding to the current value of the accelerator opening degree stored in the storage section.
Dependencies are inferred from the claim text.