FRAME ERROR CONCEALMENT METHOD AND APPARATUS, AND AUDIO DECODING METHOD AND APPARATUS

摘要

PROBLEM TO BE SOLVED: To accurately restore an error frame to be adaptive to signal characteristics without an additional delay at low complexity in a frequency domain.SOLUTION: A frame error concealment method includes: predicting a parameter by performing a regression analysis on a group basis for a plurality of groups formed from a first plurality of bands forming an error frame; and concealing an error in the error frame by using the parameter predicted on a group basis.SELECTED DRAWING: Figure 7