Provided is a signal processing device including a control unit that performs a sound signal process on a waveform of a signal generated on a basis of movement of an object, and cause sound corresponding to a signal generated on a basis of the sound signal process to be output within a predetermined period of time. The signal processing device is capable of aurally-exaggerating movement of an object itself and providing the aurally-exaggerated movement of the object by performing a sound signal process on a waveform of a signal generated on the basis of the movement of the object.