Empirical mode decomposition based reconstruction of speech signal in noisy environment

A novel technique for speech signal reconstruction using Empirical Mode Decomposition (EMD) of speech signal in noisy condition is described in this paper. EMD is applied for finding the glottal source signal of speech signals. After getting the source information, vocal tract filter response is determined and the original speech signal is reconstructed with the help of EMD with and without prior knowledge of vocal tract filter responses. The experimental result derived establishes the effectiveness of the proposed method.