9th Annual Conference of the International Speech Communication Association

Brisbane, Australia
September 22-26, 2008

Two Stage Iterative Wiener Filtering for Speech Enhancement

Krishna Nand K, T. V. Sreenivas

Indian Institute of Science, India

We formulate a two-stage Iterative Wiener filtering (IWF) approach to speech enhancement, bettering the performance of constrained IWF, reported in literature. The codebook constrained IWF (CCIWF) has been shown to be effective in achieving convergence of IWF in the presence of both stationary and non-stationary noise. To this, we include a second stage of unconstrained IWF and show that the speech enhancement performance can be improved in terms of average segmental SNR (SSNR), Itakura-Saito (IS) distance and Linear Prediction Coefficients (LPC) parameter coincidence. We also explore the tradeoff between the number of CCIWF iterations and the second stage IWF iterations.

Full Paper

Bibliographic reference.  Nand K, Krishna / Sreenivas, T. V. (2008): "Two stage iterative Wiener filtering for speech enhancement", In INTERSPEECH-2008, 175-178.