Reconstruction of Multiple Descriptions by MMSE Estimation

Conference: Sprachkommunikation 2010 - 9. ITG-Fachtagung
10/06/2010 - 10/08/2010 at Bochum, Deutschland

Proceedings: Sprachkommunikation 2010

Pages: 4Language: englishTyp: PDF

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Schmalen, Laurent; Vary, Peter (Institute of Communication System and Data Processing, RWTH Aachen University, 52074 Aachen, Germany)

This paper shows the application of soft-decision source decoding (SDSD) to correlated speech codec parameters given by multiple description scalar quantization. In the presence of additive white Gaussian noise on the transmission link, the reconstruction quality can be largely improved by the application of SDSD. Furthermore, if the transmission link is characterized by packet losses only, the presented approach improves the reconstruction quality whenever packet losses occur. The proposed approach is compared to a well-known soft-decision approach based on cross-decoding.