New Directions in Lattice Based Lossy Compression
Adriana Vasilache · Signal Processing · 2010
We have presented a new method for entropy encoding of lattice codevectors. It is based on the lattice vector set partitioning generated by the product code indexes of such vectors. It can provide bitrate savings up to 30% within an audio coding scenario with respect to the fixed rate lattice quantization. In addition to the improved compression efficiency, the proposed method enables the use of lattice entropy encoding in higher dimensions.