On Loudspeaker Rendering of Auditory Distance in Higher Order Ambisonics

Gavin Kearney; Marcin Gorzel; Frank Boland

On Loudspeaker Rendering of Auditory Distance in Higher Order Ambisonics

Gavin Kearney, Marcin Gorzel, Frank Boland

Theatre, Film, TV and Interactive Media

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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 language	English
Title of host publication	Institute of Acoustics
Subtitle of host publication	Acoustics 2012
Place of Publication	Nantes, France
Publisher	Institute of Acoustics
Pages	1-8
Publication status	Published - 23 Apr 2012
Event	Proceedings of the Acoustics 2012 - Nantes, France Duration: 23 Apr 2012 → 27 Apr 2012

Conference

Conference	Proceedings of the Acoustics 2012
Country/Territory	France
City	Nantes
Period	23/04/12 → 27/04/12

Access to Document

https://hal.archives-ouvertes.fr/hal-00811349/document

Cite this

@inproceedings{34a23644306b4d69b6a88f8d80a15ebe,

title = "On Loudspeaker Rendering of Auditory Distance in Higher Order Ambisonics",

abstract = "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 theAmbisonic order and more-so dependent on the monoaural cues of level difference and direct-to-reverberant ratio.",

author = "Gavin Kearney and Marcin Gorzel and Frank Boland",

year = "2012",

month = apr,

day = "23",

language = "English",

pages = "1--8",

booktitle = "Institute of Acoustics",

publisher = "Institute of Acoustics",

address = "United Kingdom",

note = " Proceedings of the Acoustics 2012 ; Conference date: 23-04-2012 Through 27-04-2012",

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TY - GEN

T1 - On Loudspeaker Rendering of Auditory Distance in Higher Order Ambisonics

AU - Kearney, Gavin

AU - Gorzel, Marcin

AU - Boland, Frank

PY - 2012/4/23

Y1 - 2012/4/23

N2 - 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 theAmbisonic order and more-so dependent on the monoaural cues of level difference and direct-to-reverberant ratio.

AB - 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 theAmbisonic order and more-so dependent on the monoaural cues of level difference and direct-to-reverberant ratio.

M3 - Conference contribution

SP - 1

EP - 8

BT - Institute of Acoustics

PB - Institute of Acoustics

CY - Nantes, France

T2 - Proceedings of the Acoustics 2012

Y2 - 23 April 2012 through 27 April 2012

ER -