Interspeech'2005 - Eurospeech

Lisbon, Portugal
September 4-8, 2005

Speech Enhancement Using Markov Model of Speech Segments

T. M. Sunil Kumar, T. V. Sreenivas

Indian Institute of Science, India

It has been shown that the Iterative Weiner Filtering (IWF) requires both intra-frame and inter-frame constraints to ensure that the enhanced speech spectra possess natural characteristics of speech. One automated way to apply the intra-frame constraints is Codebook Constrained Wiener Filtering (CCWF). In the present work, we propose a new method of imposing the inter-frame constraints based on Markov modeling of speech segments. We will show that the proposed method improves both Average segmental log-likelihood ratio and Average segmental SNR of the enhanced speech even at SNRs below 0dB.

Full Paper

Bibliographic reference.  Kumar, T. M. Sunil / Sreenivas, T. V. (2005): "Speech enhancement using Markov model of speech segments", In INTERSPEECH-2005, 2069-2072.