Sony Group Corporation
SIGNAL PROCESSING DEVICE, METHOD, AND PROGRAM

Abstract:

The present technology relates to a signal processing device, a method, and a program that can obtain a signal with higher sound quality. The signal processing device includes: a calculation unit that calculates a parameter for generating a difference signal corresponding to an input compressed sound source signal on the basis of a prediction coefficient and the input compressed sound source signal, the prediction coefficient being obtained by learning using, as training data, a difference signal between an original sound signal and a learning compressed sound source signal obtained by compressing and coding the original sound signal; a difference signal generation unit that generates the difference signal on the basis of the parameter and the input compressed sound source signal; and a synthesis unit that synthesizes the generated difference signal and the input compressed sound source signal. The present technology can be applied to a signal processing device.