US 12,445,794 B2
Signal processing apparatus and method, acoustic reproduction apparatus, and program
Tetsu Magariyachi, Kanagawa (JP); Takuma Domae, Kanagawa (JP); and Kana Seno, Tokyo (JP)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 17/790,453
Filed by Sony Group Corporation, Tokyo (JP)
PCT Filed Dec. 24, 2020, PCT No. PCT/JP2020/048357
§ 371(c)(1), (2) Date Jun. 30, 2022,
PCT Pub. No. WO2021/140929, PCT Pub. Date Jul. 15, 2021.
Claims priority of application No. 2020-000678 (JP), filed on Jan. 7, 2020.
Prior Publication US 2023/0038945 A1, Feb. 9, 2023
Int. Cl. H04S 7/00 (2006.01); H04R 3/00 (2006.01)
CPC H04S 7/303 (2013.01) [H04S 2400/11 (2013.01); H04S 2420/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A signal processing apparatus comprising:
a communication unit configured to transmit a current position of the signal processing apparatus to a server and obtain an acoustic transfer characteristic from the server, wherein
the server stores a plurality of acoustic transfer characteristics respectively associated with a plurality of positions in a target area,
the acoustic transfer characteristic is selected from among the plurality of acoustic transfer characteristics based on the target area and the current position being one of the plurality of positions for which one of the plurality of acoustic transfer characteristics is stored;
the acoustic transfer characteristic is not sent if the acoustic transfer characteristic associated with the current position is not present; and
an acoustic transfer characteristic convolution processing unit that convolves the acoustic transfer characteristic, which is obtained from the server according to the current position of a presentation destination of a virtual sound source, and virtual sound source data of the virtual sound source, which is configured to be broadcast to the plurality of positions.