Enhancing binaural reconstruction from rigid circular microphone array recordings by using virtual microphones

César D. Salvador, Shuichi Sakamoto, Jorge Treviño, Yôiti Suzuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Spatially accurate binaural reconstruction from rigid circular arrays requires a large number of microphones. However, physically adding microphones to available arrays is not always feasible. In environments such as conference rooms or concert halls, prior knowledge regarding source positions allows for the prediction of pressure signals at positions without microphones. Prediction is performed by relying on a physical model for the acoustically rigid sphere. Recently, we used this model to formulate a surface pressure interpolation method for virtual microphone generation. In this study, we use virtual microphones to enhance the high-frequency spatial accuracy of binaural reconstruction. Numerical experiments in anechoic and reverberant conditions demonstrate that adding virtual microphones extends the frequency range of operation and attenuates the time-domain artifacts.

Original languageEnglish
Title of host publicationAES International Conference on Audio for Virtual and Augmented Reality 2018
Subtitle of host publicationScience, Technology, Design, and Implementation
PublisherAudio Engineering Society
Pages194-202
Number of pages9
ISBN (Electronic)9781510870390
Publication statusPublished - 2018 Jan 1
EventAES International Conference on Audio for Virtual and Augmented Reality: Science, Technology, Design, and Implementation, AVAR 2018 - Redmond, United States
Duration: 2018 Aug 202018 Aug 22

Publication series

NameProceedings of the AES International Conference
Volume2018-August

Other

OtherAES International Conference on Audio for Virtual and Augmented Reality: Science, Technology, Design, and Implementation, AVAR 2018
CountryUnited States
CityRedmond
Period18/8/2018/8/22

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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