The University of Southampton
Engineering and the Environment

Robustness and directivity analysis in sound zones  Seminar

Time:
16:00
Date:
15 May 2018
Venue:
Building 13/3017

Event details

ISVR Engineering Research Seminar Series 2017-2018

Abstract

Pressure matching (PM) and planarity control (PC) methods can be used to reproduce local sound with a certain orientation at the listening zone, while suppressing the sound energy at the quiet zone. Regularized PM and PC, incorporating coarse error estimation, are introduced to increase the robustness in non-ideal reproduction scenarios. Facilitated by this, the interaction between regularization, robustness, (tuned) personal audio optimization, and local directional performance is explored. Simulations show that under certain conditions, PC and weighted PM achieve comparable performance, while PC is more robust to a poorly selected regularization parameter. Experimental results applying the coarse error estimation approach to reduce the number of in-situ measurements for acoustic contrast control in a practical sound zone system are also presented.

Speaker information

Phil Coleman, University of Surrey. Philip is a Lecturer in Audio at the Institute of Sound Recording (IoSR), University of Surrey, UK. Previously, he worked in the Centre for Vision, Speech and Signal Processing (CVSSP, University of Surrey) as a Research Fellow on the project S3A: Future spatial audio for an immersive listening experience at home. His research interests are broadly in the domain of engineering and perception of 3D spatial audio, including object-based audio, immersive reverberation, sound field control, loudspeaker and microphone array processing, and enabling new user experiences in spatial audio. He received his Ph.D. degree in 2014 on the topic of loudspeaker array processing for personal audio, as part of the perceptually optimized sound zones (POSZ) project.

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