US 12,148,442 B2
Signal processing device and signal processing method
Kazuya Tateishi, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/904,320
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Jan. 18, 2021, PCT No. PCT/JP2021/001467
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2021/171829, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 2020-030136 (JP), filed on Feb. 26, 2020.
Prior Publication US 2023/0060081 A1, Feb. 23, 2023
Int. Cl. G10L 21/0232 (2013.01); G10L 15/02 (2006.01); G10L 15/06 (2013.01); G10L 21/0208 (2013.01); G10L 25/18 (2013.01); G10L 25/30 (2013.01); H04R 1/08 (2006.01); H04R 3/02 (2006.01); H04R 29/00 (2006.01)
CPC G10L 21/0232 (2013.01) [G10L 15/02 (2013.01); G10L 15/063 (2013.01); H04R 1/08 (2013.01); H04R 3/02 (2013.01); H04R 29/001 (2013.01); G10L 2021/02082 (2013.01); G10L 25/18 (2013.01); G10L 25/30 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A signal processing device, comprising:
a processing unit configured to:
collect, through a microphone, a mixed sound signal from a mixed sound of a speaker reproduction signal and a target signal,
input a first suppression signal based on a result of suppression of the speaker reproduction signal from the mixed sound signal, wherein
the suppression of the speaker reproduction signal from the mixed sound signal is based on a linear processing on the mixed sound signal, and
the first suppression signal includes a plurality of non-linear components of the speaker reproduction signal, and
output a second suppression signal based on a result of suppression of the plurality of non-linear components of the speaker reproduction signal from the first suppression signal, wherein the suppression of the plurality of non-linear components is based on a non-linear processing of the first suppression signal.