Validation and application of three-dimensional auralisation during concert hall renovation
Validation and application of three-dimensional auralisation during concert hall renovation
During the renovation of auditoria and concert halls, the acoustic quality is normally evaluated from measurements of impulse responses. One possibility for evaluating the acoustic quality from the measurements (the simulations) consists of convolving anechoic music with the measured (or simulated) impulse responses. In this way, a psycho-acoustic test is achieved using a virtual sound field representation. The listening room ‘Arlecchino’ at the University of Bologna includes ambisonics (up to fifth order) and stereo-dipole playback for virtual reproduction of sound in rooms. In this article, the effectiveness of the listening room ‘Arlecchino’ is first analysed, comparing acoustic parameters obtained from binaural impulse responses measured in some opera houses (in Italy) and auditorium (in Japan) with those virtually measured after the virtual reconstruction obtained in the listening rooms. The similarity between real and virtual sound fields, has been evaluated by comparing different acoustic parameters calculated by real and virtual sound fields, in four halls in different configurations, by means of the stereo-dipole method. In the second part of the article, the listening room was used to analyse the variation in interaural cross-correlation measurements in rooms obtained considering different anechoic sound signals convolved with the binaural impulse responses, to quantify the variation of the interaural cross correlation with different motifs. For this purpose, two different musical instrument digital interface musical motifs, very different from each other for their music characteristics, have been considered. Moreover, for each musical motif, different sound characteristics (i.e. different musical instruments) were considered, to consider both the rhythmic and timbre aspect.
Three-dimensional auralisation, binaural impulse response, interaural cross-correlation function, room acoustics, stereo-dipole validation
311-331
Tronchin, Lamberto
8527a327-51fb-4865-b99d-eab721dadec9
Merli, Francesca
c9b7b0ce-9b5c-4858-a8f2-6d1e79420421
Manfren, Massimiliano
f2b8c02d-cb78-411d-aed1-c4d056365392
Nastasi, Benedetto
feb76017-aa21-4a3d-a57f-114985fecb06
1 December 2020
Tronchin, Lamberto
8527a327-51fb-4865-b99d-eab721dadec9
Merli, Francesca
c9b7b0ce-9b5c-4858-a8f2-6d1e79420421
Manfren, Massimiliano
f2b8c02d-cb78-411d-aed1-c4d056365392
Nastasi, Benedetto
feb76017-aa21-4a3d-a57f-114985fecb06
Tronchin, Lamberto, Merli, Francesca, Manfren, Massimiliano and Nastasi, Benedetto
(2020)
Validation and application of three-dimensional auralisation during concert hall renovation.
Building Acoustics, 27 (4), , [1351010X2092679].
(doi:10.1177/1351010X20926791).
Abstract
During the renovation of auditoria and concert halls, the acoustic quality is normally evaluated from measurements of impulse responses. One possibility for evaluating the acoustic quality from the measurements (the simulations) consists of convolving anechoic music with the measured (or simulated) impulse responses. In this way, a psycho-acoustic test is achieved using a virtual sound field representation. The listening room ‘Arlecchino’ at the University of Bologna includes ambisonics (up to fifth order) and stereo-dipole playback for virtual reproduction of sound in rooms. In this article, the effectiveness of the listening room ‘Arlecchino’ is first analysed, comparing acoustic parameters obtained from binaural impulse responses measured in some opera houses (in Italy) and auditorium (in Japan) with those virtually measured after the virtual reconstruction obtained in the listening rooms. The similarity between real and virtual sound fields, has been evaluated by comparing different acoustic parameters calculated by real and virtual sound fields, in four halls in different configurations, by means of the stereo-dipole method. In the second part of the article, the listening room was used to analyse the variation in interaural cross-correlation measurements in rooms obtained considering different anechoic sound signals convolved with the binaural impulse responses, to quantify the variation of the interaural cross correlation with different motifs. For this purpose, two different musical instrument digital interface musical motifs, very different from each other for their music characteristics, have been considered. Moreover, for each musical motif, different sound characteristics (i.e. different musical instruments) were considered, to consider both the rhythmic and timbre aspect.
Text
BUILDING-ACOUSTICS-ARTICOLO1_Validation and application
- Accepted Manuscript
More information
Accepted/In Press date: 17 April 2020
e-pub ahead of print date: 5 June 2020
Published date: 1 December 2020
Additional Information:
Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship and/or publication of this article: This work was carried out within the research project no. 201594LT3F which is funded by PRIN (Programmi di Ricerca Scientifica di Rilevante Interesse Nazionale) of the Italian Ministry of Education, University and Research.
Publisher Copyright:
© The Author(s) 2020.
Keywords:
Three-dimensional auralisation, binaural impulse response, interaural cross-correlation function, room acoustics, stereo-dipole validation
Identifiers
Local EPrints ID: 441818
URI: http://eprints.soton.ac.uk/id/eprint/441818
ISSN: 1351-010X
PURE UUID: dd3704be-32ac-423a-976d-0bd499f61436
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Date deposited: 29 Jun 2020 16:31
Last modified: 17 Mar 2024 05:42
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Contributors
Author:
Lamberto Tronchin
Author:
Francesca Merli
Author:
Benedetto Nastasi
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