Digital prediction with spectral noise shaping
M. Bonnet, Mamadou Mboup, Odile Macchi · International Conference on Acoustics, Speech, and Signal Processing · 2002
In order to avoid the coding noise accumulation in successive transcoders, a new fully digital structure is used where all the filters have quantized inputs. Whereas the coding noise spectrum is flat with the CCITT algorithm, with this new structure it presents a spectral shaping which can be further improved in high-frequency region, by filtering the quantizing noise.>