Disclosed are a residual signal coding method of an LPC coefficient based on cooperative quantization, and a computing device for performing the method. The residual signal coding method may comprise: a step of generating an encoded LPC coefficient and an LPC residual signal by performing linear prediction coding (LPC) analysis and quantization on an input speech; a step of determining a predicted LPC residual signal by applying the LPC residual signal to a cross module residual learning; a step of performing LPC synthesis by using the encoded LPC coefficient and the predicted LPC residual signal; and a step of determining an output speech that is a synthesized output according to a result of performing the LPC synthesis.
LPC RESIDUAL CODING METHOD OF LINEAR PREDICTION CODING COEFFICIENT BASED ON COLLABORATIVE QUANTIZATION AND COMPUTING DEVICE FOR PERFORMING THE METHOD