The invention discloses a
voice frequency signal frame loss compensation method and a
voice frequency signal frame loss compensation device so as to obtain better compensation effects and at the same time guarantee zero time
delay and
low complexity. The method comprises the steps that when a following first frame is lost after frames are received correctly, the frame type of the first lost frame is judged, and when the first lost frame is a non-multiple-
harmonic frame, a
modified discrete cosine transform (MDCT) coefficient of the first lost frame is worked out by using an MDCT coefficient of a prior frame or MDCT coefficients of a plurality of frames prior to the first lost frame; an original compensation
signal of the first lost frame is obtained according to the MDCT coefficient of the first lost frame; the original compensation signal of the first lost frame undergoes a first type
wave form adjustment, and a
time domain signal obtained after the adjustment is used as the
time domain signal for the first lost frame. The
voice frequency signal frame loss compensation device comprises a frame type judging module, an MDCT coefficient obtaining module, an original compensation signal obtaining module and an adjustment module. Compared with the prior art, the voice frequency signal frame loss compensation method and the voice frequency signal frame loss compensation device have the advantages of being free of
delay, small in computing quantity and storage quantity, easy to realize, good in
compensation effect and the like.