The running sound sources of Shinkansen trains are those from the wheels, those from the aerial power lines, and the sound of wind generated by protrusions in front of and on the sides of the fast-moving train-car bodies (aerodynamic sound).
走行音の発生源としては車輪や架線、車体前面や側面・上面の突起物による風切り音（空力音）がある。