Patent ID: 8990075
Filing Date: 2015-03-24
Classification: G10L

Abstract:
1. A method of bandwidth extension decoding, comprising: checking whether a signal is encoded in a first domain or a second domain other than the first domain; lossless decoding and de-quantizing the signal, and inverse-transforming the de-quantized signal to the second domain if the checking result shows that the signal is encoded in the first domain; decoding the signal using CELP (code excited linear prediction) if the checking result shows that the signal is encoded in the second domain; transforming the signal that is inverse-transformed to the second domain, by using a quadrature mirror filterbank (QMF), or transforming the signal that is decoded using the CELP, by using the QMF; generating, in a QMF domain, a high band signal using the transformed signal; generating a stereo signal from the high band signal and the transformed signal; and inverse-transforming the stereo signal, by using an inverse QMF, wherein the method is performed using at least one processor.