New non-uniform transmission and ADPCM coding system for improving both signal to noise ratio and bit rate

Elisabeth Lahalle (1) , Gilles Fleury (1) , Rawad Zgheib (1)

1 E3S - Supélec Sciences des Systèmes

Here we address the problem of adaptive digitaltransmission systems. New systems based on a nonuniform transmission (NUT) principle are proposed, utilizing a recently proposed algorithm for adaptive identification and reconstruction of AR processes subject to missing data. We propose a new adaptive sampling (nonuniform transmission) method combined with the adaptive reconstruction algorithm. A new NUT-ADPCM coding-decoding system is designed. The proposed system is demonstrated for audio-signal compression and compared to the ADPCM G.726 standard. The new system yields improvements in both signal-to-noise ratio and average bit rate

Keywords: Adaptive transmission; adaptive reconstruction; audio-signal compression.; audio-signal compression

Domains: Signal and Image processing; Signal and Image Processing

Elisabeth Lahalle, Gilles Fleury, Rawad Zgheib. New non-uniform transmission and ADPCM coding system for improving both signal to noise ratio and bit rate. IEEE Signal Processing Letters, 2011, 18 (3), pp.149-152. ⟨10.1109/LSP.2010.2102016⟩. ⟨hal-00573552⟩