Patent ID: 8520857

Claim:
A head-related transfer function measurement method comprising steps of: performing a first measuring in an environment including placing acousto-electric conversion means nearby both ears of a listener where placement of electro-acoustic conversion means is assumed, said acousto-electric conversion means being capable of picking up sound waves, picking up first sound waves emitted at a perceived sound source position with said acousto-electric conversion means in a state where a dummy head or a human exists at a listener position, and measuring a head-related transfer function from only the first sound waves directly reaching said acousto-electric conversion means; removing the dummy head or human from the listener position and the environment; performing a second measuring in the environment, including picking up second sound waves emitted at the perceived sound source position with said acousto-electric conversion means in a state where the dummy head or human has been removed from the listener position and the environment while the remaining environment is the same as that of the first measuring, and measuring a natural-state transfer property from only the second sound waves directly reaching said acousto-electric conversion means; normalizing said head-related transfer function measured by said first measuring with said natural-state transfer property measured by said second measuring to obtain a normalized head-related transfer function; and storing the normalized head-related transfer function obtained in said normalizing in a storage unit.