US 12,035,128 B2
Signal processing device and signal processing method
Keiichi Osako, Tokyo (JP); Yuhki Mitsufuji, Tokyo (JP); Masafumi Takahashi, Tokyo (JP); and Yukara Ikemiya, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/782,095
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Dec. 2, 2020, PCT No. PCT/JP2020/044855
§ 371(c)(1), (2) Date Jun. 2, 2022,
PCT Pub. No. WO2021/117576, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 2019-224997 (JP), filed on Dec. 13, 2019.
Prior Publication US 2023/0011357 A1, Jan. 12, 2023
Int. Cl. H04S 7/00 (2006.01); G10K 15/08 (2006.01); H04R 3/12 (2006.01)
CPC H04S 7/305 (2013.01) [G10K 15/08 (2013.01); H04R 3/12 (2013.01); H04S 7/303 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A signal processing device, comprising:
a reverberation sound signal generation unit configured to generate a reverberation sound signal based on a sound source position of a virtual sound source and a distance to a reference point; and
a drive signal generation unit configured to generate a drive signal for a speaker array by a wavefront synthesis filter based on at least one of a first signal obtained by wavefront synthesis filtering processing on a second signal or a third signal obtained by wavefront synthesis filtering processing on the reverberation sound signal to make the reverberation sound signal into the virtual sound source, wherein the second signal is obtained based on convolution of the reverberation sound signal with a fourth signal of the virtual sound source.