Patent ID: 8503682
Filing Date: 2013-08-06
Classification: H04S

Abstract:
1. A head-related transfer function convolution method arranged, when an audio signal is reproduced acoustically by electro-acoustic conversion means disposed in a nearby position of both ears of a listener, to convolute a head-related transfer function into said audio signal, which allows the listener to listen to the audio signal such that a sound image is localized in a perceived virtual sound image localization position, said head-related transfer function convolution method comprising: measuring, when a sound source is disposed in said virtual sound image localization position, and sound-collecting means are disposed in the position of said electro-acoustic conversion means, convoluting said obtained direct wave direction head-related transfer function, and said reflected wave direction head-related transfer function regarding the direction of said selected one reflected wave or said reflected wave direction head-related transfer functions regarding the directions of said selected plurality of reflected waves, into said audio signal; the measuring comprising: 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.