US 12,142,294 B2
Signal processing apparatus, method, and program to detect a time interval containing sound based on a distance between two mobile bodies
Ryuichi Namba, Tokyo (JP); Makoto Akune, Tokyo (JP); and Yoshiaki Oikawa, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/641,928
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Sep. 4, 2020, PCT No. PCT/JP2020/033612
§ 371(c)(1), (2) Date Mar. 10, 2022,
PCT Pub. No. WO2021/054152, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 2019-169093 (JP), filed on Sep. 18, 2019.
Prior Publication US 2022/0335967 A1, Oct. 20, 2022
Int. Cl. G10L 25/93 (2013.01); G01S 19/01 (2010.01); G10L 15/02 (2006.01); G10L 21/0208 (2013.01)
CPC G10L 25/93 (2013.01) [G01S 19/01 (2013.01); G10L 15/02 (2013.01); G10L 21/0208 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A signal processing apparatus, comprising:
an interval detection unit configured to detect a time interval containing a sound that is emitted from a first mobile body, wherein
the sound included in a first recording signal,
the first recording signal is obtained based on collection of sounds around the first mobile body in a state in which a second mobile body is present around the first mobile body, and
the time interval is detected based on:
the first recording signal and a first sensor signal output from a sensor which is attached to the first mobile body,
a second recording signal associated with the second mobile body and a second sensor signal associated with the second mobile body, and
a distance from the first mobile body to the second mobile body.