148 citations · 497 across the 45 of their papers we have counts for
6 papers · 1 filter
Single-Channel Maximum-Likelihood T60 Estimation Exploiting Subband Information
Heinrich Loellmann, Andreas Brendel, Peter Vary +1
This contribution presents four algorithms developed by the authors for single-channel fullband and subband T60 estimation within the ACE challenge. The blind estimation of the ful…
Robust coherence-based spectral enhancement for distant speech recognition
Hendrik Barfuss, Christian Huemmer, Andreas Schwarz +1
In this contribution to the 3rd CHiME Speech Separation and Recognition Challenge (CHiME-3) we extend the acoustic front-end of the CHiME-3 baseline speech recognition system by a…
A model for the temporal evolution of the spatial coherence in decaying reverberant sound fields
Sam Nees, Andreas Schwarz, Walter Kellermann
Reverberant sound fields are often modeled as isotropic. However, it has been observed that spatial properties change during the decay of the sound field energy, due to non-isotrop…
Towards a Generalization of Relative Transfer Functions to More Than One Source
Antoine Deleforge, Sharon Gannot, Walter Kellermann
We propose a natural way to generalize relative transfer functions (RTFs) to more than one source. We first prove that such a generalization is not possible using a single multicha…
Binaural coherent-to-diffuse-ratio estimation for dereverberation using an ITD model
Chengshi Zheng, Andreas Schwarz, Walter Kellermann +1
Most previously proposed dual-channel coherent-to-diffuse-ratio (CDR) estimators are based on a free-field model. When used for binaural signals, e.g., for dereverberation in binau…
Coherent-to-Diffuse Power Ratio Estimation for Dereverberation
Andreas Schwarz, Walter Kellermann
The estimation of the time- and frequency-dependent coherent-to-diffuse power ratio (CDR) from the measured spatial coherence between two omnidirectional microphones is investigate…