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On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption

Abstract: 

In this paper, we compare the performance of two active dereverberation techniques using a planar array of microphones and loudspeakers. The two techniques are based on a solution to the Kirchhoff-Helmholtz Integral Equation (KHIE). We adapt a Wave Field Synthesis (WFS) based method to the application of real-time 3D dereverberation by using a low-latency pre-filter design. The use of First-Order Differential (FOD) models is also proposed as an alternative method to the use of monopoles with WFS and which does not assume knowledge of the room geometry or primary sources. The two methods are compared by observing the suppression of reflections off a single active wall over the volume of a room in the time and (temporal) frequency domain. The FOD method provides better suppression of reflections than the WFS based method but at the expense of using higher order models. The equivalent absorption coefficients are comparable to passive fibre panel absorbers.

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Paper Details

Authors:
Christian Ritz, W. Bastiaan Kleijn
Submitted On:
26 April 2018 - 12:55am
Short Link:
Type:
Poster
Event:
Presenter's Name:
Jacob Donley
Paper Code:
AASP-P1.3
Document Year:
2018
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[1] Christian Ritz, W. Bastiaan Kleijn, "On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/3182. Accessed: Jul. 20, 2018.
@article{3182-18,
url = {http://sigport.org/3182},
author = {Christian Ritz; W. Bastiaan Kleijn },
publisher = {IEEE SigPort},
title = {On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption},
year = {2018} }
TY - EJOUR
T1 - On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption
AU - Christian Ritz; W. Bastiaan Kleijn
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/3182
ER -
Christian Ritz, W. Bastiaan Kleijn. (2018). On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption. IEEE SigPort. http://sigport.org/3182
Christian Ritz, W. Bastiaan Kleijn, 2018. On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption. Available at: http://sigport.org/3182.
Christian Ritz, W. Bastiaan Kleijn. (2018). "On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption." Web.
1. Christian Ritz, W. Bastiaan Kleijn. On the Comparison of Two Room Compensation / Dereverberation Methods Employing Active Acoustic Boundary Absorption [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/3182