US 12,300,210 B2
Signal processing apparatus, signal processing method, signal processing model production method, and sound output device
Yasunobu Murata, Tokyo (JP); and Kohei Asada, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 18/000,690
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed May 26, 2021, PCT No. PCT/JP2021/019901
§ 371(c)(1), (2) Date Dec. 5, 2022,
PCT Pub. No. WO2021/251136, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 2020-101763 (JP), filed on Jun. 11, 2020.
Prior Publication US 2023/0223001 A1, Jul. 13, 2023
Int. Cl. G10K 11/178 (2006.01); H04R 1/10 (2006.01)
CPC G10K 11/17823 (2018.01) [G10K 11/17825 (2018.01); G10K 11/17881 (2018.01); H04R 1/1083 (2013.01); G10K 2210/1081 (2013.01); G10K 2210/3011 (2013.01); G10K 2210/3026 (2013.01); G10K 2210/3027 (2013.01); G10K 2210/3028 (2013.01); G10K 2210/3038 (2013.01); G10K 2210/3044 (2013.01); G10K 2210/3048 (2013.01); H04R 2460/01 (2013.01)] 14 Claims
OG exemplary drawing
 
13. A signal processing method, including:
acquiring a first acoustic characteristic in a user's ear, isolated from an outside world;
generating sound data having a phase opposite to an ambient sound leaking into the user's ear;
correcting the sound data based on a correction filter; and
determining a filter coefficient of the correction filter, based on a trained model in which
the first acoustic characteristic, a second acoustic characteristic measured in advance, and the sound data are input, and
a noise suppression ratio is output.