Patent ID: 11875774
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A sound image localizing device comprising:
a directivity control filter design unit, including one or more processors, configured to compute a directivity control filter from a desired directional characteristic;
a filter coefficient correction unit, including one or more processors, configured to correct the directivity control filter computed by the directivity control filter design unit; and
a convolution operation unit, including one or more processors, configured to compute an output acoustic signal by performing convolution of an input acoustic signal and the directivity control filter corrected by the filter coefficient correction unit, wherein filters that respectively correspond to speakers constituting a speaker array are computed by the directivity control filter design unit and the filter coefficient correction unit, an acoustic beam is generated using directivity control by the speaker array, and the acoustic beam is caused to be reflected from a wall surface or a ceiling to generate a virtual sound source.