METHOD AND DEVICE FOR RECONSTRUCTING ACOUSTIC DATA AND ANIMATION DATA IN SYNCHRONIZATION

A pair of acoustic data and animation data that are in synchronization are compressed or expanded, and reconstructed in synchronization in the following manner. The acoustic data and the animation data are divided into a plurality of segments. A parameter time series that determines the degree of compression or expansion of the acoustic data and the animation data is determined for each divided segment. The divided acoustic data is further divided at equal intervals into input frames. An output frame length is determined based on the determined parameter time series. A correspondence table for synchronous points between the acoustic data before compression or expansion and the acoustic data after compression or expansion with respect to the acoustic data to be compressed or expanded is output based on the determined parameter time series. The acoustic data is compressed or expanded based on the correspondence table. The animation data is compressed or expanded based on the correspondence table.