Abstract: A decoding method of an Enhanced Variable Rate Codec (EVRC) is provided for reducing EVRC noises during error packet processing in a CDMA system. The method induces setting a seed value for generating background noise when the input error packet is a first error packet, and the seed value is maintained when the error packet is inputted continually. In addition, an average fixed codebook gain and an average eighth gain are decayed, so that the decoder of the EVRC can generate more comfort background noises without loud annoying noises. Further, an excitation signal is post filtered selectively, so that granular noise can be prevented and speech quality of the decoder output is improved.