US 11,894,013 B2
Sound collection loudspeaker apparatus, method and program for the same
Kazunori Kobayashi, Tokyo (JP); and Shoichiro Saito, Tokyo (JP)
Assigned to NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
Appl. No. 17/263,522
Filed by NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo (JP)
PCT Filed Jul. 10, 2019, PCT No. PCT/JP2019/027245
§ 371(c)(1), (2) Date Jan. 26, 2021,
PCT Pub. No. WO2020/026725, PCT Pub. Date Feb. 6, 2020.
Claims priority of application No. 2018-145950 (JP), filed on Aug. 2, 2018.
Prior Publication US 2021/0233552 A1, Jul. 29, 2021
Int. Cl. G10L 21/0324 (2013.01); H04R 3/00 (2006.01); B60N 2/90 (2018.01)
CPC G10L 21/0324 (2013.01) [H04R 3/00 (2013.01); B60N 2/90 (2018.02); H04R 2499/13 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An acoustic signal processing apparatus for installation in a vehicle, wherein at least a sound pickup position and a sound amplification position are assumed to be present in the vehicle,
the apparatus comprising:
processing circuitry configured to:
perform control such that:
(i) when an opening portion of the vehicle is closed by opening and closing means disposed at the opening portion, an acoustic signal based on a sound pickup signal obtained from a microphone that collects sound emitted from the sound pickup position is played back from a speaker at the sound amplification position; and
(ii) when the opening portion is open, the acoustic signal is not played back from the speaker to stop a sound amplification function in order to prevent propagating unintended sound.