APPARATUS AND METHOD FOR DETERMINING WEIGHTING FUNCTION FOR LPC COEFFICIENTS QUANTIZATION

摘要

A method for determining a weighting function may include the steps of: obtaining a line spectral frequency (LSF) coefficient or an immittance spectral frequency (ISF) coefficient from a linear prediction coding (LPC) coefficient; and determining the weighting function by combining a first weighting function, based on spectrum analysis information, with a second weighting function, based on location information of the LSF coefficients or the ISF coefficients.