US 12,334,045 B2
Acoustic reproduction apparatus, signal processing apparatus, and signal processing method
Shogo Shinkai, Tokyo (JP); Hayami Tobise, Tokyo (JP); Shun Katsuyama, Tokyo (JP); Mahendra Kodavati, Tokyo (JP); and Takuma Fukunaga, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/906,335
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Feb. 16, 2021, PCT No. PCT/JP2021/005732
§ 371(c)(1), (2) Date Sep. 14, 2022,
PCT Pub. No. WO2021/199742, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 2020-063187 (JP), filed on Mar. 31, 2020.
Prior Publication US 2023/0223000 A1, Jul. 13, 2023
Int. Cl. G10K 11/178 (2006.01)
CPC G10K 11/17823 (2018.01) [G10K 11/17825 (2018.01); G10K 11/17857 (2018.01); G10K 11/17875 (2018.01); G10K 11/17881 (2018.01); G10K 2210/1081 (2013.01); G10K 2210/3026 (2013.01); G10K 2210/3027 (2013.01); G10K 2210/3219 (2013.01); H04R 2410/01 (2013.01); H04R 2410/05 (2013.01)] 16 Claims
OG exemplary drawing
 
16. A signal processing method, comprising:
in an acoustic reproduction apparatus:
collecting a first sound collection signal from a first sound collection surface of a first microphone;
collecting a second sound collection signal from a second sound collection surface of a second microphone, wherein
the second sound collection surface is in a first direction different from a second direction of the first sound collection surface, and
each of the first microphone and the second microphone is associated with execution of a noise cancellation process based on a feedback scheme;
generating, by a first feedback filter, a first noise-cancelling signal based on a high-frequency component of the first sound collection signal;
generating, by a second feedback filter, a second noise-cancelling signal based on a low-frequency component of the second sound collection signal; and
generating a noise-cancelling signal based on the first noise-cancelling signal and the second noise-cancelling signal.