rar file contains frame separation, decoder, huffman table, compensated B frame and etc.,

The ADPCM package is a flexible simulation tool for an adaptive differential encoder and decoder with backward predictor adaptation. It uses an LP-based (Burg) adaptive predictor and a nonuniform quantizer with mu transfer function. It generates the

Matlab code for Huffman encoder/decoder with (or without) recursive splitting.

HUFFMANN ALPHABETS CODEC using MATLAB