The applicability of "Impacting Excitation Apparatus" to measurement of floor impact sound generated by walking was investigated in case of the floor covered with soft finishing material. At first, excitation forces applied by walking and the apparatus were investigated. Secondly, the floor impact sounds were measured in actual houses. As the results, it was confirmed that the forces and the sounds would be changed by the effect of soft finishing material, the frequency characteristics of the force of heel landing could be almost substituted by the apparatus, and the sounds generated by walking and the apparatus were almost the same.
