In many speech communication applications a microphone array is available nowadays,
such that multi-microphone speech enhancement techniques can be used instead of single …

Various dereverberation and noise reduction algorithms require power spectral density
estimates of the anechoic speech, reverberation, and noise. In this work, we derive a novel …

Multi-channel short-time Fourier transform (STFT) domain-based processing of reverberant
microphone signals commonly relies on power-spectral-density (PSD) estimates of early …

This paper presents spatially robust far-field microphone beamformers and nullformers
derived using the von Mises and von Mises-Fisher distributions to model the expected …

We characterize the delay properties of uniformly modulated finite impulse response (FIR)
filterbanks. Conditions on the permissable delay are developed for this class of filterbanks …

A new robust microphone array method to enhance speech signals generated by a moving
person in a noisy environment is presented. This blind approach is based on a two-stage …

In this paper a technique for estimating the single channel Wiener filter post-processor using
two complementary adaptive near-field beamformers is presented as an alternative to voice …

This licentiate thesis summarizes my work within the field of array speech enhancement for
hands-free communication applications. The work has been performed at the Department of …

This paper investigates the short-term power spectral estimation of the source of interest and
the interference in noisy environment for hands-free communication. Models of probability …

The convenience and the ease of use provided by hands-free operation of speech
communication devices mean that speech enhancement schemes are becoming …