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I. Kodrasi, B. Cauchi, S. Goetze, and S. Doclo, "Instrumental and Perceptual Evaluation of Dereverberation Techniques Based on Robust Acoustic Multichannel Equalization," J. Audio Eng. Soc., vol. 65, no. 1/2, pp. 117-129, (2017 January.). doi: https://doi.org/10.17743/jaes.2016.0047 I. Kodrasi, B. Cauchi, S. Goetze, and S. Doclo, "Instrumental and Perceptual Evaluation of Dereverberation Techniques Based on Robust Acoustic Multichannel Equalization," J. Audio Eng. Soc., vol. 65 Issue 1/2 pp. 117-129, (2017 January.). doi: https://doi.org/10.17743/jaes.2016.0047
Abstract: Speech signals recorded in an enclosed space by microphones at a distance from the speaker are often corrupted by reverberation, which arises from the superposition of many delayed and attenuated copies of the source signal. Because reverberation degrades the signal, removing reverberation would enhance quality. Dereverberation techniques based on acoustic multichannel equalization are known to be sensitive to room impulse response perturbations. In order to increase robustness, several methods have been proposed, as for example, using a shorter reshaping filter length, incorporating regularization, or applying a sparsity-promoting penalty function. This paper focuses on evaluating the performance of these methods for single-source multi-microphone scenarios, using instrumental performance measures as well as using subjective listening tests. By analyzing the correlation between the instrumental and the perceptual results, it is shown that signal-based performance measures are more advantageous than channel-based performance measures to evaluate the perceptual speech quality of signals that were dereverberated by equalization techniques. Furthermore, this analysis also demonstrates the need to develop more reliable instrumental performance measures.

@article{kodrasi2017instrumental,
author={kodrasi, ina and cauchi, benjamin and goetze, stefan and doclo, simon},
journal={journal of the audio engineering society},
title={instrumental and perceptual evaluation of dereverberation techniques based on robust acoustic multichannel equalization},
year={2017},
volume={65},
number={1/2},
pages={117-129},
doi={https://doi.org/10.17743/jaes.2016.0047},
month={january},} @article{kodrasi2017instrumental,
author={kodrasi, ina and cauchi, benjamin and goetze, stefan and doclo, simon},
journal={journal of the audio engineering society},
title={instrumental and perceptual evaluation of dereverberation techniques based on robust acoustic multichannel equalization},
year={2017},
volume={65},
number={1/2},
pages={117-129},
doi={https://doi.org/10.17743/jaes.2016.0047},
month={january},
abstract={speech signals recorded in an enclosed space by microphones at a distance from the speaker are often corrupted by reverberation, which arises from the superposition of many delayed and attenuated copies of the source signal. because reverberation degrades the signal, removing reverberation would enhance quality. dereverberation techniques based on acoustic multichannel equalization are known to be sensitive to room impulse response perturbations. in order to increase robustness, several methods have been proposed, as for example, using a shorter reshaping filter length, incorporating regularization, or applying a sparsity-promoting penalty function. this paper focuses on evaluating the performance of these methods for single-source multi-microphone scenarios, using instrumental performance measures as well as using subjective listening tests. by analyzing the correlation between the instrumental and the perceptual results, it is shown that signal-based performance measures are more advantageous than channel-based performance measures to evaluate the perceptual speech quality of signals that were dereverberated by equalization techniques. furthermore, this analysis also demonstrates the need to develop more reliable instrumental performance measures.},}

TY - paper
TI - Instrumental and Perceptual Evaluation of Dereverberation Techniques Based on Robust Acoustic Multichannel Equalization
SP - 117 EP - 129
AU - Kodrasi, Ina
AU - Cauchi, Benjamin
AU - Goetze, Stefan
AU - Doclo, Simon
PY - 2017
JO - Journal of the Audio Engineering Society
IS - 1/2
VO - 65
VL - 65
Y1 - January 2017 TY - paper
TI - Instrumental and Perceptual Evaluation of Dereverberation Techniques Based on Robust Acoustic Multichannel Equalization
SP - 117 EP - 129
AU - Kodrasi, Ina
AU - Cauchi, Benjamin
AU - Goetze, Stefan
AU - Doclo, Simon
PY - 2017
JO - Journal of the Audio Engineering Society
IS - 1/2
VO - 65
VL - 65
Y1 - January 2017
AB - Speech signals recorded in an enclosed space by microphones at a distance from the speaker are often corrupted by reverberation, which arises from the superposition of many delayed and attenuated copies of the source signal. Because reverberation degrades the signal, removing reverberation would enhance quality. Dereverberation techniques based on acoustic multichannel equalization are known to be sensitive to room impulse response perturbations. In order to increase robustness, several methods have been proposed, as for example, using a shorter reshaping filter length, incorporating regularization, or applying a sparsity-promoting penalty function. This paper focuses on evaluating the performance of these methods for single-source multi-microphone scenarios, using instrumental performance measures as well as using subjective listening tests. By analyzing the correlation between the instrumental and the perceptual results, it is shown that signal-based performance measures are more advantageous than channel-based performance measures to evaluate the perceptual speech quality of signals that were dereverberated by equalization techniques. Furthermore, this analysis also demonstrates the need to develop more reliable instrumental performance measures.