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| The Selection of MELP Parameters to be Utilized with Joint Source-Channel Decoding | |||
| Tenhunen,Ari | Centre for Wireless Communications, University of Oulu | ||
| Siltala,Sami | Nokia, Finland | ||
| In this paper, we determine the necessary parameters of the mixed-excitation linear predictive enhanced (MELPe) speech coder to be modeled with a first-order Markov chain in a joint source-channel decoding scheme. The selection is based on the bit error sensitivity analysis of the MELPe bits and the calculated residual redundancy of the parameters. It is shown that although some parameter might not be essential for the speech quality intrinsically, the substantial residual redundancy of the same parameter utilized in the channel decoding can be beneficial for the overall system performance. We also measure the effect of mismatched training sequence to the joint-decoding of the MELPe speech. The results show that even incorrect training sequence of different language provides considerable improvement to speech quality. | |||
| Ari Tenhunen received the M.Sc. degree in Physics from the University of Oulu, Oulu, Finland in 2005. Since 2001, he has been working as Research Scientist in the Centre for Wireless Communications, University of Oulu. | |||