US 12,149,911 B2
Signal processing apparatus, signal processing method, and program
Takao Fukui, Tokyo (JP)
Assigned to SONY GROUP CORPORATION, Tokyo (JP)
Appl. No. 17/904,308
Filed by SONY GROUP CORPORATION, Tokyo (JP)
PCT Filed Feb. 12, 2021, PCT No. PCT/JP2021/005239
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2021/172053, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 2020-029745 (JP), filed on Feb. 25, 2020.
Prior Publication US 2023/0067510 A1, Mar. 2, 2023
Int. Cl. H04S 1/00 (2006.01); H04S 7/00 (2006.01)
CPC H04S 1/007 (2013.01) [H04S 7/30 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A signal processing apparatus, comprising:
a central processing unit (CPU) configured to:
generate, based on an input signal and a prediction coefficient that is acquired by learning with, as training data, a difference signal based on a re-quantized signal for learning acquired by re-quantization of an original sound signal and the original sound signal, the difference signal corresponding to the input signal; and
combine the generated difference signal and the input signal.