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

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,
• wherein the computer program product further causes the computer to execute a step of determining whether to generate the squealing sound, only when the load is within a predetermined range.

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;
• 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;
• calculates a slip angle of at least one of the tires of the mobile object;
• and changes a tone of the squealing sound on the basis of the slip angle;
• and
• an output device that outputs the squealing sound.

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 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;
• calculating a slip angle of at least one of the tires of the mobile object;
• changing a tone of the squealing sound on the basis of the slip angle;
• and outputting the squealing sound.