Active Room Compensation for 2.5D Sound Field Reproduction

Yitong Chen, Wen Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Modelling secondary sources as 3D point sources to reproduce 2D desired sound field is named as 2.5D sound field reproduction, which has the intrinsic dimensionality mismatch problem. Existing methods for 2.5D reproduction have focused on solving the dimensionality mismatch problem and mostly considered free-field condition. However, in most cases, the reverberation caused by the listening room will degrade the reproduction performance. In this work, we propose an active room compensation strategy for 2.5D reproduction. Firstly, adopt sectorial mode matching algorithm to achieve 2.5D reproduction, the desired sound field and generated sound field are matched at the reproduction center. Secondly, the modal-domain algorithm is developed to estimate reverberant sound field and design the compensation signals of loudspeakers to compensate reverberant sound field. The proposed method is validated through simulation experiments to demonstrate its effectiveness against room reverberations.

Original languageEnglish
Title of host publicationProceedings of the 8th Conference on Sound and Music Technology - Selected Papers from CSMT
EditorsXi Shao, Kun Qian, Li Zhou, Xin Wang, Ziping Zhao
PublisherSpringer Science and Business Media Deutschland GmbH
Pages105-112
Number of pages8
ISBN (Print)9789811616488
DOIs
StatePublished - 2021
Event8th Conference on Sound and Music Technology, CSMT 2020 - Taiyuan, China
Duration: 5 Nov 20208 Nov 2020

Publication series

NameLecture Notes in Electrical Engineering
Volume761 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference8th Conference on Sound and Music Technology, CSMT 2020
Country/TerritoryChina
CityTaiyuan
Period5/11/208/11/20

Keywords

  • 2.5D reproduction
  • Modal domain
  • Room compensation
  • Sound field reproduction

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