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Using a spherical microphone array for stage acoustics: A preliminary case for a new spatial parameter


Panton, L and Cabrera, D and Holloway, D, Using a spherical microphone array for stage acoustics: A preliminary case for a new spatial parameter, Proceedings of the 22nd International Congress on Acoustics, 5-9 September 2016, Buenos Aires, Argentina, pp. 1-10. ISSN 2415-1599 (2016) [Refereed Conference Paper]

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The acoustic conditions on stage for musicians are traditionally assessed with an omnidirectional receiver; however, with the use of a spherical microphone array the directionality of on-stage sound fields can be examined. This paper explores the issues around using such a microphone for stage acoustic measurements. As part of this study the 32-channel spherical microphone array Eigenmike has been used for acoustic measurements on-stage in six Australian auditoria; additionally, in four of these venues a traditional omnidirectional receiver was also used. This paper compares the results of standard omnidirectional parameters with the Eigenmike and omnidirectional receiver to assess the 189 validity of the omnidirectional parameters derived from measurements with the Eigenmike. For example, the stage acoustic parameters the ‘support measures’ deviate between the microphones by no more than 0.5 dB. Additionally, the paper explores redefining the standard acoustic parameters to consider directionality, and presents these results in comparison to subjective musician assessments. A new parameter is proposed that corresponds well with the preferences of musician playing in ensemble. This work is being completed as part of larger study examining stage acoustics for chamber orchestras, which has also included subjective musician surveys with the Australian Chamber Orchestra regarding the venues included in the objective acoustic study.

Item Details

Item Type:Refereed Conference Paper
Keywords:stage acoustics, higher order ambisonics
Research Division:Built Environment and Design
Research Group:Architecture
Research Field:Architectural science and technology
Objective Division:Culture and Society
Objective Group:Arts
Objective Field:Music
UTAS Author:Panton, L (Miss Lilyan Panton)
UTAS Author:Holloway, D (Associate Professor Damien Holloway)
ID Code:111643
Year Published:2016
Deposited By:Engineering
Deposited On:2016-09-27
Last Modified:2018-04-05

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