| 摘要 |
This invention aims to provide a method for localization of an acoustic image out of the head upon listening with a headphone capable of obtaining audibility just as if a reproduced sound is heard at a listening point with actual speakers, different from conventional methods and a device for achieving the same method. This method is intended for localization of an acoustic image out of the head in hearing a reproduced sound via a headphone, and comprises the steps of: with audio signals S1-S11 of left, right channels reproduced by an appropriate audio appliance as input signals, branching the input signals of the left and right channels to at least two systems; to form signals of each system corresponding to the left, right channels with left, right speaker sounds imagined in an appropriate sound space with respect to the head of a listener wearing a headphone Hp and virtual reflected sound in the virtual sound space SS caused from a sound generated from the left and right virtual speakers S PL, S PR, creating a virtual speaker sound signal by processing so that the virtual speaker sounds from the left and right speakers are expressed by direct sound signals, and virtual reflected sound signals by processing so that the virtual reflected sound is expressed by reflected sound signal; mixing the direct sound signal and reflected sound signal of each of the left, right channels created in the above manner with mixers M L, M R for the left and right channels; and supplying both the speakers for the left, right ears of the headphone with outputs of the left and right mixers M L, M R.
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