US 12,289,583 B2
Sound collection and emission apparatus, sound collection and emission method, and program
Kazunori Kobayashi, Tokyo (JP); Hiroaki Ito, Tokyo (JP); and Shin Murata, Tokyo (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/640,305
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Sep. 9, 2019, PCT No. PCT/JP2019/035344
§ 371(c)(1), (2) Date Mar. 3, 2022,
PCT Pub. No. WO2021/048893, PCT Pub. Date Mar. 18, 2021.
Prior Publication US 2022/0329936 A1, Oct. 13, 2022
Int. Cl. H04R 3/00 (2006.01); B60R 11/02 (2006.01); B60W 40/04 (2006.01); B60W 50/14 (2020.01); H04R 1/40 (2006.01); H04S 3/00 (2006.01)
CPC H04R 3/00 (2013.01) [H04R 2430/01 (2013.01); H04R 2499/13 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A sound collection and emission method for an acoustic signal processing apparatus including a processor, a memory connected to the processor, and microphones to cause a driver to grasp a situation if a siren is included in acoustic signals collected by the microphones installed at an automobile, comprising:
detecting whether the siren emanating from outside the automobile is included in the acoustic signals collected by the microphones;
emitting acoustic signals obtained through conversion of the acoustic signals collected by the microphones from speakers installed inside the automobile if the siren is included in the acoustic signals collected by the microphones;
acquiring an operating state of the automobile; and
emitting the acoustic signals obtained through the conversion if the operating state of the automobile meets a criterion for determination defined in advance and not emitting the acoustic signals obtained through the conversion if the operating state does not meet the criterion for determination, wherein
the acoustic signals obtained through conversion of the acoustic signals collected by the microphones includes the siren,
the operating state of the automobile comprises at least one of a state of a transmission or a steering angle of a steering wheel, and
the sound collection and emission method comprises estimating a direction from which the siren arrives using the acoustic signals collected by the microphones, mixing the acoustic signals obtained through the conversion emitted from the speakers in accordance with the direction, and localizing a sound image of the acoustic signals obtained through the conversion in the direction.