Numerical evaluation of binaural synthesis from rigid spherical microphone array recordings

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

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

7 Citations (Scopus)


Binaural systems seek to convey a high-definition listening experience by re-creating the sound pressure at both of the listener's ears. The use of a rigid spherical microphone array (RSMA) allows the capture of sound pressure fields for binaural presentation to multiple listeners. The aim of this paper is to objectively address the question on the required resolution for capturing an individual space. We numerically evaluated how binaural synthesis from RSMA recordings is affected when using different numbers of microphones. Evaluations were based on a human head model. Accurate synthesis of spectral information was possible up to a maximum frequency determined by the number of microphones. Nevertheless, we found that the overall synthesis accuracy could not be indefinitely improved by simply adding more microphones. The limit to the number of microphones beyond which the overall synthesis accuracy did not increase was higher for the interaural spectral information than for the monaural one.

Original languageEnglish
Title of host publicationProceedings of the 2016 AES International Conference
Subtitle of host publicationHeadphone Technology
EditorsJurgen Peissig, Alexander Lindau
PublisherAudio Engineering Society
ISBN (Electronic)9781942220091
Publication statusPublished - 2016
Event2016 AES International Conference on Headphone Technology - Aalborg, Denmark
Duration: 2016 Aug 242016 Aug 26

Publication series

NameProceedings of the AES International Conference


Conference2016 AES International Conference on Headphone Technology


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