US 12,089,013 B2
Audio processing device having microphones arranged with different spacing and diameters
Yohei Sakuraba, Tokyo (JP); Yuuji Hirasawa, Tokyo (JP); Eiji Chihara, Tokyo (JP); Atsushi Masuda, Tokyo (JP); and Junsei Abe, Tokyo (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 17/612,308
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Apr. 3, 2020, PCT No. PCT/JP2020/015308
§ 371(c)(1), (2) Date Nov. 18, 2021,
PCT Pub. No. WO2020/241050, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-098975 (JP), filed on May 28, 2019.
Prior Publication US 2022/0167085 A1, May 26, 2022
Int. Cl. H04R 3/00 (2006.01); H04R 1/26 (2006.01)
CPC H04R 3/005 (2013.01) [H04R 1/265 (2013.01); H04R 2430/03 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An audio processing device, comprising:
a plurality of microphones arranged in a shape other than a line;
a plurality of directivity generation circuits, each of which is configured to generate a plurality of audio signals having a predetermined directivity by using a combination of a plurality of the microphones for generation of the directivity and using a plurality of the combinations of the microphones with spaces therebetween that are different from each other,
wherein a first directivity generation circuit, of the plurality of directivity generation circuits, is configured to generate a unidirectional left side audio signal with a directivity principle axis aligned to the left using a first plurality of the microphones, and a second directivity generation circuit, of the plurality of directivity generation circuits, is configured to generate a unidirectional right side audio signal with a directivity principle axis aligned to the right using a second plurality of microphones different from the first plurality of microphones,
wherein at least one of the plurality of microphones is in both the first plurality of microphones and the second plurality of microphones.