INTERSPEECH 2008
9th Annual Conference of the International Speech Communication Association

Brisbane, Australia
September 22-26, 2008

A Speech Enhancement Approach Using Piecewise Linear Approximation of an Explicit Model of Environmental Distortions

Jun Du, Qiang Huo

Microsoft Research Asia, China

This paper presents a speech enhancement approach derived by using a piecewise linear approximation (PLA) of an explicit model of environmental distortions. PLA is a generalization of two traditional approaches, namely vector Taylor series (VTS) and MAX approximations. Formulations are described for both maximum likelihood (ML) estimation of noise model parameters and minimum mean-squared error (MMSE) estimation of clean speech. Evaluation experiments are conducted to enhance speech signals corrupted by several types of additive noises. Compared to the traditional MAX-approximation based approach, our PLA-based speech enhancement approach achieves better performance in terms of two objective quality measures, namely segmental SNR and log-spectral distortion.

Full Paper

Bibliographic reference.  Du, Jun / Huo, Qiang (2008): "A speech enhancement approach using piecewise linear approximation of an explicit model of environmental distortions", In INTERSPEECH-2008, 569-572.