In rooms with nonuniform absorption due to different material properties, the spatial properties of the decaying reverberant sound field were found to be time-variant, violating the common assumption of a diffuse sound field. Recently, we proposed a model for the coherence of such a sound field in a rectangular room, using knowledge of the geometry and surface reflection coefficients. In this paper, we describe a coherence-based dereverberation method based on this model. We conduct an evaluation with impulse responses which were generated for rooms with non-uniform absorption, confirming that the model can be applied for speech dereverberation.

Authors: Nees, Sam; Schwarz, Andreas; Kellermann, Walter
Affiliation: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
AES Conference: 60th International Conference: DREAMS (Dereverberation and Reverberation of Audio, Music, and Speech) (January 2016)
Paper Number: 5-4
Publication Date: January 27, 2016
Subject: Paper Session 5

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