US 12,262,171 B2
Audio spot forming device
Yusuke Yoshimura, Tokyo (JP); Yuta Ikeguchi, Tokyo (JP); Hisatoshi Kasahara, Tokyo (JP); Atsushi Aratake, Tokyo (JP); Shuichi Yanagi, Tokyo (JP); and Suguru Oguchi, Tokyo (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/913,423
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Mar. 27, 2020, PCT No. PCT/JP2020/014196
§ 371(c)(1), (2) Date Sep. 21, 2022,
PCT Pub. No. WO2021/192261, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2023/0097117 A1, Mar. 30, 2023
Int. Cl. H04R 1/32 (2006.01); H04R 1/02 (2006.01); H04R 5/02 (2006.01)
CPC H04R 1/323 (2013.01) [H04R 1/026 (2013.01); H04R 5/02 (2013.01); H04R 2201/025 (2013.01); H04R 2217/03 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An audio spot formation device comprising:
a processor dividing a sound wave into a carrier wave and a sideband wave and radiate the carrier wave and the sideband wave;
a speaker disposition unit comprising a plurality of parametric speakers, wherein the speaker disposition unit is attached to a support stand at a support unit;
at least one of a height of the support stand, an angle of attachment of the speaker disposition unit at the support unit and a direction of at least one parametric speaker of the plurality of parametric speakers is adjustable; and
a position at which an audio spot is formed is adjusted via the adjustment, wherein
the audio spot formation device is communicably connected to an information terminal;
measures a velocity of a moving body using a velocimeter;
transmits the measured velocity information to the information terminal;
receives adjustment information from the information terminal; and
the audio spot formation device forms the audio spot in such a manner that the audio spot follows the moving body, by adjusting at least one of the height of the support stand, the angle of attachment of the speaker disposition unit at the support unit and the direction of at least one parametric speaker of the plurality of parametric speakers using the adjustment information.