On Loudspeaker Rendering of Auditory Distance in Higher Order Ambisonics

Gavin Kearney, Marcin Gorzel, Frank Boland

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


In this paper we investigate the perceived distance of sound sources rendered over loudspeaker arrays. We consider the perception of sound source distance with sources rendered at the loudspeakers as well as beyondthe loudspeaker array radius. In particular, we explore this perception with Ambisonic soundfields up to 3rd Order. Sources are rendered for distances ranging from 2m to 8m and soundfields are presented over a 16 channel spherical loudspeaker array. Subjects are asked to gauge the source distance of female speech and pink noise bursts using Ambisonics reproduction. Test stimuli are created from measurements of 1st order spatial impulse responses in a reverberant room and are encoded to higher order spherical harmonic representations using the Directional Audio Coding methodology. Results demonstrate that the perception of source distance is largely independent of the
Ambisonic order and more-so dependent on the monoaural cues of level difference and direct-to-reverberant ratio.
Original languageEnglish
Title of host publicationInstitute of Acoustics
Subtitle of host publicationAcoustics 2012
Place of PublicationNantes, France
PublisherInstitute of Acoustics
Publication statusPublished - 23 Apr 2012
Event Proceedings of the Acoustics 2012 - Nantes, France
Duration: 23 Apr 201227 Apr 2012


Conference Proceedings of the Acoustics 2012

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