Bandwidth scalable codec and control method thereof

摘要

The present invention relates to a bandwidth scalable codec and a control method thereof. The control method of the bandwidth scalable codec supporting different frequency bands according to the present invention includes checking whether bandwidth switching has occurred by comparing bandwidths of signals corresponding to respective frames of an input signal, computing an interval of a bandwidth switching section and comparing the interval with a preset threshold value, when bandwidth switching has occurred, and controlling a frequency band of the input signal on the basis of the threshold value comparison result and increase or decrease of bandwidth in the bandwidth switching section. The bandwidth scalable codec lessens sound deterioration caused by a sudden bandwidth change, to thereby improve the overall quality of voice communication.