VOICE DECODER AND VOICE DECODING METHOD

摘要

A highlight processing unit is provided in the decode processing unit of a voice decoder and a counter unit outputs the number of continuous frame errors of a coding voice signal. When the number of continuous frame errors is not more than a specified reference number of continuous frame errors, an unprocessed signal generated from the coding voice signal is highlight-processed by the highlight processing unit to thereby provide a decoded voice signal with an excellent subjective tone quality; while, when the number of continuous frame errors exceeds the specified reference number of continuous frame errors due to a change in communication quality, a strain occurring in the decoded voice signal is eased with no highlight-processing performed on the unprocessed signal.