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A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS

Abstract: 

Sound zones are typically created using Acoustic Contrast Control (ACC), Pressure Matching (PM), or variations of the two. ACC maximizes the acoustic potential energy contrast between a listening zone and a quiet zone. Although the contrast is maximized, the phase is not controlled. To control both the amplitude and the phase, PM instead minimizes the difference between the reproduced sound field and the desired sound field in all zones. On the surface, ACC and PM seem to control sound fields differently, but we here demonstrate they are actually extreme special cases of a much more general framework. The framework is inspired by the variable span linear filtering framework for speech enhancement. Using this framework, we demonstrate that 1) ACC gives the best contrast, but the highest signal distortion in the bright zone, and 2) PM gives the smallest signal distortion in the bright zone, but the worst contrast. Aside from showing this mathematically, we also demonstrate this via a small toy example.

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Paper Details

Authors:
Taewoong Lee, Jesper Kjær Nielsen, Jesper Rindom Jensen, and Mads Græsbøll Christensen
Submitted On:
18 April 2018 - 2:57pm
Short Link:
Type:
Poster
Event:
Presenter's Name:
Taewoong Lee
Paper Code:
AASP-P6.8
Document Year:
2018
Cite

Document Files

[Poster] VAST_ICASSP2018_final+.pdf

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[1] Taewoong Lee, Jesper Kjær Nielsen, Jesper Rindom Jensen, and Mads Græsbøll Christensen, "A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/2925. Accessed: Mar. 21, 2019.
@article{2925-18,
url = {http://sigport.org/2925},
author = {Taewoong Lee; Jesper Kjær Nielsen; Jesper Rindom Jensen; and Mads Græsbøll Christensen },
publisher = {IEEE SigPort},
title = {A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS},
year = {2018} }
TY - EJOUR
T1 - A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS
AU - Taewoong Lee; Jesper Kjær Nielsen; Jesper Rindom Jensen; and Mads Græsbøll Christensen
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/2925
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Taewoong Lee, Jesper Kjær Nielsen, Jesper Rindom Jensen, and Mads Græsbøll Christensen. (2018). A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS. IEEE SigPort. http://sigport.org/2925
Taewoong Lee, Jesper Kjær Nielsen, Jesper Rindom Jensen, and Mads Græsbøll Christensen, 2018. A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS. Available at: http://sigport.org/2925.
Taewoong Lee, Jesper Kjær Nielsen, Jesper Rindom Jensen, and Mads Græsbøll Christensen. (2018). "A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS." Web.
1. Taewoong Lee, Jesper Kjær Nielsen, Jesper Rindom Jensen, and Mads Græsbøll Christensen. A UNIFIED APPROACH TO GENERATING SOUND ZONES USING VARIABLE SPAN LINEAR FILTERS [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/2925