A sound generation device for a vehicle, the sound generation device being installed in a vehicle which travels using an electric-powered motor as a power source, the sound generation device comprising: a sound controller which sets plural frequencies corresponding to a motor rotation speed of the electric-powered motor and generates a synthetic sound signal indicating a synthetic sound including sounds at the plural frequencies; and a sound output unit which outputs the synthetic sound based on the synthetic sound signal generated by the sound controller, characterized in that the sound controller sets an increase amount of an output of a sound in a low frequency band large compared to an increase amount of an output of a sound in a high frequency band in a frequency range of the synthetic sound in accordance with an increase in a motor torque value of the electric-powered motor, wherein the sound controller makes an increase amount of an output of a sound at at least one specific frequency included in the low frequency band larger than an increase amount of an output of a sound at a frequency included in a high frequency band in accordance with an increase in the motor torque value of the electric-powered motor, and wherein the output of the sound at the at least one specific frequency is increased from an output level which is unrecognizable by the driver in the vehicle to an output level which is recognizable by the driver in accordance with an increase in the motor torque value of the electric-powered motor, such that, taking into consideration an audible sound pressure level of a human, a sound at a new frequency is added to the low frequency band in accordance with an increase in the motor torque value. a sound controller which sets plural frequencies corresponding to a motor rotation speed of the electric-powered motor and generates a synthetic sound signal indicating a synthetic sound including sounds at the plural frequencies; and a sound output unit which outputs the synthetic sound based on the synthetic sound signal generated by the sound controller, the sound controller sets an increase amount of an output of a sound in a low frequency band large compared to an increase amount of an output of a sound in a high frequency band in a frequency range of the synthetic sound in accordance with an increase in a motor torque value of the electric-powered motor, wherein the sound controller makes an increase amount of an output of a sound at at least one specific frequency included in the low frequency band larger than an increase amount of an output of a sound at a frequency included in a high frequency band in accordance with an increase in the motor torque value of the electric-powered motor, and wherein the output of the sound at the at least one specific frequency is increased from an output level which is unrecognizable by the driver in the vehicle to an output level which is recognizable by the driver in accordance with an increase in the motor torque value of the electric-powered motor, such that, taking into consideration an audible sound pressure level of a human, a sound at a new frequency is added to the low frequency band in accordance with an increase in the motor torque value.