Title :
A Two-Stage MLP+NLMS Lossless Coder for Stereo Audio
Author :
Ravelli, Emmanuel ; Gournay, Philippe ; Lefebvre, Roch
Author_Institution :
Dept. of Electr. & Comput. Eng., Sherbrooke Univ., Que.
Abstract :
We propose in this paper a two-stage lossless audio coder for stereo signals. The first stage is based on a hybrid approach that uses either a stereo linear prediction or a multilayer perceptron-based (MLP) nonlinear prediction. The second stage is based on two cascaded normalized least mean square (NLMS) filters that remove the remaining redundancy in the residuals of the stereo prediction. The obtained compression ratios are equal or superior to the best state-of-the-art coders
Keywords :
audio coding; filtering theory; least mean squares methods; multilayer perceptrons; multilayer perceptron; nonlinear prediction; normalized least mean square filters; stereo audio; stereo prediction; two-stage lossless audio coder; Decoding; Decorrelation; Filters; Frequency; MONOS devices; MPEG 4 Standard; Neural networks; Nonhomogeneous media; Quantization; Testing;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1661241
