	US 12,108,242 B2
	Signal processing device and signal processing method
Yuji Tsuchida, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/778,621
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Nov. 13, 2020, PCT No. PCT/JP2020/042377 § 371(c)(1), (2) Date May 20, 2022, PCT Pub. No. WO2021/106613, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 2019-216096 (JP), filed on Nov. 29, 2019.
Prior Publication US 2023/0007430 A1, Jan. 5, 2023
Int. Cl. H04S 7/00 (2006.01)

CPC H04S 7/304 (2013.01) [H04S 7/307 (2013.01)]

10 Claims

1. A signal processing device, comprising:

a relative azimuth prediction unit configured to predict, based on a first delay time, a relative azimuth of a virtual sound source when a sound of the virtual sound source reaches a listener, wherein the first delay time is based on a distance from the virtual sound source to the listener; and

a binaural-room impulse response (BRIR) generation unit configured to:

acquire a head-related transfer function of the relative azimuth for each one of a plurality of virtual sound sources, wherein the plurality of virtual sound sources comprises the virtual sound source; and

generate a BRIR based on a plurality of head-related transfer functions, wherein the plurality of head-related transfer functions comprises the acquired head-related transfer function.