Processing device, squealing sound generation method in information processing device, and computer program product

• US 20070269054A1
• Filed: 05/16/2007
• Published: 11/22/2007
• Est. Priority Date: 05/17/2006
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Sega
• Original Assignee: Kabushiki Kaisha Sega
• Inventors: Mori, Kazuhiro, Takagi, Yasuhiro
• Granted Patent: US 8,078,300 B2
• Time in Patent Office: Days
• US Class Current: 381/86
• CPC Class Codes: A63F 13/10 Control of the course of the game, e.g. start, progess, end
• CPC Class Codes: A63F 13/45 Controlling the progress of the video game
• CPC Class Codes: A63F 13/54 involving acoustic signals, e.g. for simulating revolutions per minute [RPM] dependent engine sounds in a driving game or reverberation against a virtual wall
• CPC Class Codes: A63F 13/57 Simulating properties, behaviour or motion of objects in the game world, e.g. computing tyre load in a car race game A63F13/56 takes precedence
• CPC Class Codes: A63F 13/803 Driving vehicles or craft, e.g. cars, airplanes, ships, robots or tanks
• CPC Class Codes: A63F 2300/6081 generating an output signal, e.g. under timing constraints, for spatialization
• CPC Class Codes: A63F 2300/64 for computing dynamical parameters of game objects, e.g. motion determination or computation of frictional forces for a virtual car
• CPC Class Codes: A63F 2300/8017 Driving on land or water; Flying

Abstract

A computer program product for causing a computer of an information processing device to execute processing for generating a sound that is generated by a mobile object with a plurality of tires, which moves on a predetermined surface within a virtual three-dimensional space, the computer being caused to execute the steps of: controlling the movement of the mobile object; calculating a load applied to at least one of the tires of the mobile object; controlling, on the basis of the load, a volume and a pitch of a squealing sound generated from the tires; and outputting the squealing sound. The computer is further caused to execute the steps of calculating a slip angle of at least one of the tires of the mobile object, and changing the tone of the squealing sound on the basis of the slip angle.

Claims

1. A computer program product, comprising:

a computer usable medium having a computer readable program code embodied therein,

wherein the program product is a program for causing a computer of an information processing device to execute processing for generating a sound that is generated by a mobile object with a plurality of tires, which moves on a predetermined surface within a virtual three-dimensional space, the computer program comprising;

a computer readable code configured to cause the computer to control movement of the mobile object;

a computer readable code configured to cause the computer to calculate a load applied to at least one of the tires of the mobile object;

a computer readable code configured to cause the computer to control, on the basis of the load, a volume and a pitch of a squealing sound generated from at least one of the tires; and

a computer readable code configured to cause the computer to output the squealing sound.

2. The computer program product according to claim 1, further comprising:

a computer readable code configured to cause the computer to calculate a slip angle of at least one of the tires of the mobile object; and

a computer readable code configured to cause the computer to change a tone of the squealing sound on the basis of the slip angle.

3. The computer program product according to claim 1, further causing the computer to execute a step of determining whether to generate the squealing sound, only when the load is within a predetermined range.

4. The computer program product according to claim 2, further causing the computer to execute a step of determining whether to generate the squealing sound, only when the load is within a predetermined range.

5. The computer program product according to claim 1, further causing the computer to execute a step of switching between the processing for generating the squealing sound and avoidance of the processing for generating the squealing sound, in response to a change in a viewpoint of an image in the information processing device, or a change in the distance between a mobile object, which is the basis of the viewpoint, and the mobile object, which is a target for generating the squealing sound.

6. The computer program product according to claim 2, further causing the computer to execute a step of switching between the processing for generating the squealing sound and avoidance of the processing for generating the squealing sound, in response to a change in a viewpoint of an image in the information processing device, or a change in the distance between a mobile object, which is the basis of the viewpoint, and the mobile object, which is a target for generating the squealing sound.

7. The computer program product according to claim 4, further causing the computer to execute a step of switching between the processing for generating the squealing sound and avoidance of the processing for generating the squealing sound, in response to a change in a viewpoint of an image in the information processing device, or a change in the distance between a mobile object, which is the basis of the viewpoint, and the mobile object, which is a target for generating the squealing sound.

8. The computer program product according to claim 2, further causing the computer to execute a step of switching to first generation processing for generating the squealing sound on the basis of the load and the slip angle, second generation processing for generating the squealing sound on the basis of the load only, or avoidance of the squealing sound generation processing, in response to a change in a viewpoint of an image in the information processing device, or a change in the distance between a mobile object, which is the basis of the viewpoint, and the mobile object, which is a target for generating the squealing sound.

9. The computer program product according to claim 4, further causing the computer to execute a step of switching to first generation processing for generating the squealing sound on the basis of the load and the slip angle, second generation processing for generating the squealing sound on the basis of the load only, or avoidance of the squealing sound generation processing, in response to a change in a viewpoint of an image in the information processing device, or a change in the distance between a mobile object, which is the basis of the viewpoint, and the mobile object, which is a target for generating the squealing sound.

10. The computer program product according to claim 1, causing the computer to realize a function of generating independent squealing sound for each of the plurality of tires.

11. The computer program product according to claim 2, causing the computer to realize a function of generating independent squealing sound for each of the plurality of tires.

12. The computer program product according to claim 4, causing the computer to realize a function of generating independent squealing sound for each of the plurality of tires.

13. The computer program product according to claim 1, further causing the computer to execute the steps of:

calculating the engine speed of the mobile object;

generating an engine sound on the basis of the engine speed; and

lowering the volume of the engine sound when the squealing sound is generated.

14. The computer program product according to claim 2, further causing the computer to execute the steps of:

calculating the engine speed of the mobile object;

generating an engine sound on the basis of the engine speed; and

lowering the volume of the engine sound when the squealing sound is generated.

15. The computer program product according to claim 4, further causing the computer to execute the steps of:

calculating the engine speed of the mobile object;

generating an engine sound on the basis of the engine speed; and

lowering the volume of the engine sound when the squealing sound is generated.

16. An information processing device, which causes a computer to execute processing for generating a sound that is generated by a mobile object with a plurality of tires, which moves on a predetermined surface within a virtual three-dimensional space, and to output the generated sound, the information processing device comprising:

a computer that calculates a load applied to at least one of the tires of the mobile object subjected to movement control, and controls, on the basis of the calculated load, a volume and a pitch of a squealing sound generated from at least one of the tires; and

an output device that outputs the squealing sound.

17. A squealing sound generation method for performing processing for generating a sound that is generated by a mobile object with a plurality of tires, which moves on a predetermined surface within a virtual three-dimensional space in an information processing device, the method having the steps of:

controlling movement of the mobile object;

calculating a load that is applied to at least one of the tires of the mobile object at the time when the movement of the mobile object is controlled;

controlling, on the basis of the calculated load, a volume and a pitch of a squealing sound generated from at least one of the tires; and

outputting the squealing sound.