Apparatus and method for concealing frame erasure, and apparatus and method using the same

The present invention provides a speech decoding method and apparatus using the frame erasure concealment device and method, and this. A frame erasure concealment device according to the present invention may be confirmed whether or not the erased frames in the speech packets exist, and extracts the parameter for extracting the excitation signal and a line spectrum pair parameter of the previous normal frame portion; And if the erased frame is present, it characterized in that it comprises using a regression analysis from the previous normal frame of the excitation signal and the line spectral pair parameters above to restore the excitation signal and a line spectrum pair parameter of the erased frame, erasure frame concealment section do. According to the present invention, by restoring the predictive parameters of the erased frame by using a regression analysis, not only can improve the quality of the reconstructed speech signal, it is simply the algorithm.