Acceleration sound generation device for vehicle

Patent metadata

Field	Value
Publication number	US-9761213-B2
Application number	US-201214351187-A
Country	US
Kind code	B2
Filing date	Dec 11, 2012
Priority date	Dec 22, 2011
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

An acceleration sound generation device for a vehicle using at least one of an acceleration operation of the vehicle, an acceleration force generated by the acceleration operation, and an acceleration state obtained by the acceleration force as a control parameter. The acceleration sound generation device includes a sound generation unit and an acceleration sound delay unit. The sound generation unit generates an acceleration sound in a vehicle passenger compartment in response to an acceleration sound signal that is generated based on the control parameter. The acceleration sound delay unit delays output of the acceleration sound by the sound generation unit such that the acceleration sound changes and is delayed with respect to a change in the control parameter. The acceleration sound delay unit sets a delay degree of the acceleration sound at a rising time of the control parameter separately from at a falling time of the control parameter.

First claim

The invention claimed is:

1. An acceleration sound generation device for a vehicle using at least one of an acceleration operation of the vehicle, an acceleration force generated by the acceleration operation, and an acceleration state obtained by the acceleration force as a control parameter, the acceleration sound generation device comprising:
a sound generation unit configured to generate an acceleration sound in a vehicle passenger compartment in response to an acceleration sound signal that is generated based on the control parameter; and
an acceleration sound delay unit configured to delay output of the acceleration sound by the sound generation unit such that the acceleration sound changes and is delayed with respect to a change in the control parameter, the acceleration sound delay unit being further configured to separately set a first delay time and a second delay time, the first delay time corresponding to a delay degree of the acceleration sound at a rising time of the control parameter, the second delay time corresponding to a delay degree of the acceleration sound at a falling time of the control parameter.

2. The acceleration sound generation device as claimed in claim 1 , wherein
the acceleration sound delay unit delays the acceleration sound by delaying the change in the control parameter used to generate the acceleration sound signal.

3. The acceleration sound generation device as claimed in claim 2 , wherein
the acceleration sound delay unit uses at least an acceleration operation of the vehicle as the control parameter to delay the acceleration sound by delaying the change in the acceleration operation used to generate the acceleration sound signal.

4. The acceleration sound generation device as claimed in claim 3 , wherein
the acceleration sound delay unit delays, when delaying the change in the acceleration operation, the acceleration operation so as to cause a change rate of the acceleration sound with respect to the acceleration operation to be small in a region of small acceleration operation and to hold the change rate of the acceleration sound with respect to the change in the acceleration operation in a region of large acceleration operation.

5. The acceleration sound generation device as claimed in claim 1 , wherein
the acceleration sound delay unit delays the acceleration sound by delaying the acceleration sound signal used to operate the sound generation unit.

6. The acceleration sound generation device as claimed in claim 1 , further comprising
an acceleration sound signal conversion unit configured to convert the acceleration sound signal into a power signal that drives the sound generation unit to generate the acceleration sound, and
the acceleration sound delay unit delays the acceleration sound by delaying the power signal used to operate the sound generation unit.

7. The acceleration sound generation device as claimed in claim 1 , further comprising
the acceleration sound signal conversion unit configured to convert into a power signal, which is subsequently amplified to drive the sound generation unit to generate the acceleration sound, and
the acceleration sound delay unit delays the acceleration sound by delaying the power signal that was amplified for operating the sound generation unit.

8. The acceleration sound generation device as claimed in claim 1 , wherein
the acceleration sound delay unit sets the first delay time that is the delay degree of the acceleration sound to match a response delay of the acceleration force and the acceleration state with respect to the acceleration operation.

9. An acceleration sound generation device for a vehicle using at least one of an acceleration operation of the vehicle, an acceleration force generated by the acceleration operation, and an acceleration state obtained by the acceleration force as a control parameter, the acceleration sound generation device comprising:
a sound generation unit configured to generate an acceleration sound in a vehicle passenger compartment in response to an acceleration sound signal that is generated based on the control parameter; and
an acceleration sound delay unit configured to delay output of the acceleration sound by the sound generation unit such that the acceleration sound changes and is delayed with respect to a change in the control parameter, the acceleration sound delay unit being further configured to separately set a first delay time and a second delay time, the first delay time corresponding to a delay degree of the acceleration sound at a rising time of the control parameter, the second delay time corresponding to a delay degree of the acceleration sound at a falling time of the control parameter,
the acceleration sound delay unit differentiating the first delay time and the second delay time such that the first delay time is smaller than the second delay time to set the delay degree of the acceleration sound to be smaller at the rising time of the control parameter than at the falling time of the control parameter.

10. The acceleration sound generation device as claimed in claim 9 , wherein
the acceleration sound delay unit delays the acceleration sound by delaying the change in the control parameter used to generate the acceleration sound signal.

11. The acceleration sound generation device as claimed in claim 10 , wherein
the acceleration sound delay unit uses at least acceleration operation of the vehicle as the control parameter to delay the acceleration sound by delaying the change in the acceleration operation used to generate the acceleration sound signal.

12. The acceleration sound generation device as claimed in claim 11 , wherein
the acceleration sound delay unit delays, when delaying the change in the acceleration operation, the acceleration operation so as to cause a change rate of the acceleration sound with respect to the acceleration operation to be small in a region of small acceleration operation and to hold the change rate of the acceleration sound with respect to the change in the acceleration operation in a region of large acceleration operation.

13. The acceleration sound generation device as claimed in claim 10 , wherein
the acceleration sound delay unit sets the first delay time that is the delay degree of the acceleration sound to match a response delay of the acceleration force and the acceleration state with respect to the acceleration operation.

14. The acceleration sound generation device as claimed in claim 9 , wherein
the acceleration sound delay unit delays the acceleration sound by delaying the acceleration sound signal used to operate the sound generation unit.

15. The acceleration sound generation device as claimed in claim 14 , wherein
the acceleration sound delay unit sets the first delay time that is the delay degree of the acceleration sound to match a response delay of the acceleration force and the acceleration state with respect to the acceleration operation.

16. The acceleration sound generation device as claimed in claim 9 , further comprising
an acceleration sound signal conversion unit configured to convert the acceleration sound signal into a power signal that drives the sound generation unit to generate the acceleration sound, and
the acceleration sound delay unit delays the acceleration sound by delaying the power signal used to operate the sound generation unit.

17. The acceleration sound generation device as claimed in claim 16 , wherein
the acceleration sound delay unit sets the first delay time that is the delay degree of the acceleration sound to match a response dela

Assignees

• Nissan Motor

Inventors

• Kanehara Shunichi
• Ogose Wataru
• Shionome Koji

Classifications

• B60L2240/423

  Torque · CPC title

• G10H5/02 Primary

  using generation of basic tones · CPC title

• B60L2240/16

  longitudinal · CPC title

• Y02T10/7275

  Cross-Sectional Technologies · mapped topic

• Y02T10/72

  Electric energy management in electromobility · CPC title