Noise level prediction system for vehicle

1 . A noise level prediction system for a vehicle for predicting a noise to be perceived by an occupant of the vehicle, the noise level prediction system comprising:

a memory that stores instructions;

a processor, when executing the instructions stored in the memory, that performs operations including:

determining at least three parameters as parameters relating to a noise reduction effect when the noise is transmitted to the occupant, the at least three parameters including a parameter relating to a sound insulation ability, a parameter relating to a sound absorption ability, and a parameter relating to a distance attenuation characteristic; and

calculating and predicting a level of the noise to be perceived by the occupant by using the at least three parameters relating to the noise reduction effect.

2 . The noise level prediction system for a vehicle according to claim 1 , wherein the processor further performs operations including:

receiving an input from a user,

wherein the processor receives the input of a numerical value indicating the noise reduction effect, and

wherein the processor determines the at least three parameters by using the numerical value.

3 . The noise level prediction system for a vehicle according to claim 1 , wherein the processor further performs operations including:

receiving an input from a user,

wherein the processor receives the input of a specification value required to determine the at least three parameters, and

wherein the processor determines the at least three parameters by using the specification value.

4 . The noise level prediction system for a vehicle according to claim 2 , wherein the processor further performs operations including:

calculating, when the input of the numerical value indicating the noise reduction effect is received, a specification value required to determine the at least three parameters by using the numerical value.

5 . The noise level prediction system for a vehicle according to claim 4 ,

wherein the specification value comprises a mass or an area,

the processor further performs operations including:

performing an automatic input of the numerical value while varying the numerical value within a range specified in advance.

6 . The noise level prediction system for a vehicle according to claim 2 ,

wherein the processor receives the input individually for each factor of the noise reduction effect that is present on a path from a noise source to a position of the occupant.

7 . The noise level prediction system for a vehicle according to claim 3 ,

wherein the processor receives the input individually for each factor of the noise reduction effect that is present on a path from a noise source to a position of the occupant.

8 . A non-transitory computer-readable storage medium storing a program that enables a computer to function as a noise level prediction system for a vehicle for predicting a noise to be perceived by an occupant of the vehicle,

wherein the program enables the computer to perform:

determining at least three parameters as parameters relating to a noise reduction effect when the noise is transmitted to the occupant, the at least three parameters including a parameter relating to a sound insulation ability, a parameter relating to a sound absorption ability, and a parameter relating to a distance attenuation characteristic; and

calculating and predicting a level of the noise to be perceived by the occupant by using the at least three parameter relating to the noise reduction effect.

9 . A noise level prediction method for a vehicle for predicting a noise to be perceived by an occupant of the vehicle, the noise level prediction method comprising:

determining at least three parameters as parameters relating to a noise reduction effect when the noise is transmitted to the occupant, the at least three parameters being a parameter relating to a sound insulation ability, a parameter relating to a sound absorption ability, and a parameter relating to a distance attenuation characteristic; and

calculating and predicting a level of the noise to be perceived by the occupant by using the determined at least three parameters relating to the noise reduction effect.