US 12,445,772 B2
Acoustic processing device, method, and program
Minoru Tsuji, Chiba (JP); and Toru Chinen, Kanagawa (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 18/023,882
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Aug. 27, 2021, PCT No. PCT/JP2021/031449
§ 371(c)(1), (2) Date Feb. 28, 2023,
PCT Pub. No. WO2022/054602, PCT Pub. Date Mar. 17, 2022.
Claims priority of application No. 2020-151446 (JP), filed on Sep. 9, 2020.
Prior Publication US 2023/0336913 A1, Oct. 19, 2023
Int. Cl. H04S 7/00 (2006.01); H04R 3/00 (2006.01); H04R 29/00 (2006.01)
CPC H04R 3/005 (2013.01) [H04R 29/002 (2013.01); H04S 7/302 (2013.01); H04S 7/307 (2013.01); H04R 2430/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An acoustic processing device comprising:
a first rendering processing unit that performs rendering processing on the basis of an audio signal and generates a first output audio signal for outputting sound from a plurality of first speakers; and
a first band restriction processing unit that performs band restriction processing in accordance with the replaying band of the first speakers on the first output audio signal; and
a second rendering processing unit that performs rendering processing on the basis of the audio signal and generates a second output audio signal for outputting sound from a plurality of second speakers having a different replaying band from that of the first speakers; and
a second band restriction processing unit that performs band restriction processing in accordance with the replaying band of the second speakers on the second output audio signal
wherein the second band restriction processing unit performs filtering processing using a band pass filter (BPF).