Patent ID: 9613630
Date: 2017-04-04
CPC Classifications: G10L

Claim:
1. A method of processing a signal, comprising: receiving coding mode information indicating a speech coding scheme or an audio coding scheme, linear prediction coding degree information indicating a linear prediction coding degree, and the signal including at least one of a speech signal or an audio signal; decoding the signal according to the speech coding scheme or the audio coding scheme based on the coding mode information; decoding linear prediction coding coefficients of the signal based on the linear prediction coding degree information; and generating an output signal by applying the decoded linear prediction coding coefficients to the decoded signal, wherein the linear prediction coding degree is determined based on a variation of a value of an LPC residual generated from performing the linear prediction coding on the signal by: determining whether the value of the LPC residual generated from performing the linear prediction coding is reduced by increasing the linear prediction coding degree: based on a determination that the value of the LPC residual is reduced by increasing the linear prediction coding degree, determining the linear prediction coding degree to be a first degree: and based on a determination that the value of the LPC residual is not reduced by increasing the linear prediction coding degree, determining the linear prediction coding degree to be a second degree lower than the first degree, wherein the first degree is greater than zero degree.