This paper introduces a novel time-frequency masking approach for speech
enhancement, based on the consistency of the phase of the cross-spectrum
observed at multiple microphones. The proposed approach is derived
from solutions commonly adopted in spatial source separation and can
be used as a post-filter in traditional multi-channel speech enhancement
schemes. Since it is not based on a modeling of the coherence of diffuse
noise, the proposed method complements traditional post-filters implementations,
targeting non diffuse/coherent sources. It is particularly effective
in domestic scenarios where microphones in a given room capture interfering
coherent sources active in adjacent rooms.
An experimental analysis
on the DIRHA-GRID corpus shows that the proposed method considerably
improves the signal-to-interference-ratio and can be used on top of
state-of-the-art multi-channel speech enhancement methods.
Cite as: Brutti, A., Tsiami, A., Katsamanis, A., Maragos, P. (2016) A Phase-Based Time-Frequency Masking for Multi-Channel Speech Enhancement in Domestic Environments. Proc. Interspeech 2016, 2875-2879, doi: 10.21437/Interspeech.2016-150
@inproceedings{brutti16_interspeech,
author={Alessio Brutti and Antigoni Tsiami and Athanasios Katsamanis and Petros Maragos},
title={{A Phase-Based Time-Frequency Masking for Multi-Channel Speech Enhancement in Domestic Environments}},
year=2016,
booktitle={Proc. Interspeech 2016},
pages={2875--2879},
doi={10.21437/Interspeech.2016-150}
}