Project Ancient Acoustics Part 2 of 4 : large-scale acoustical measurements in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos

N. Hoekstra, B. Nicolai, B.P.A. Peeters, C.C.J.M. Hak, R.H.C. Wenmaekers

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

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In the last decades we have seen an increased interest in the acoustics of ancient Greek and Roman theatres and much research has been performed on many of them. Research has mainly focused on modelling the acoustics of theatres and has shown various acoustical effects. However, only a limited number of in situ measurements have been available to validate the results. In this paper, results are presented of large-scale measurements which were performed in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. The accuracy of these measurements is discussed in part one of this series of papers. Impulse response measurements have been conducted at respectively 200, 264 and 60 listener positions for 5 equal-angular dodecahedron sound source rotation steps at 2 source positions. In addition, binaural impulse responses were measured using an artificial head on respectively 10, 12 and 3 receiver positions. Finally, speech intelligibility measurements have been carried out in accordance with IEC 60268-16 using a ‘speech source’ that simulates a human voice. In the Odeon of Herodes Atticus, all measurements have been performed in the morning as well as in the evening, showing a minimal discrepancy well within the Just Noticeable Difference (JND) for every discussed parameter. This proves that it is legitimate to compare measurements collected during a full day under slightly different climate conditions. Results for the Odeon of Herodes Atticus show a uniform axisymmetric distribution over receiver positions of common acoustical parameters such as reverberation time, clarity, sound strength and spaciousness. For the theatre of Epidaurus this distribution is non-uniform due
to the opposite-facing seating areas, which is in line with findings from research by others. The results of the speech intelligibility measurements show a declining trend for STI over distance, which contradicts some findings presented in literature.
Originele taal-2Engels
Titel23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece
Pagina's1-8
StatusGepubliceerd - 10 jul 2016

Vingerafdruk

acoustics
intelligibility
impulses
receivers
clarity
evening
morning
reverberation
in situ measurement
climate
trends

Citeer dit

Hoekstra, N., Nicolai, B., Peeters, B. P. A., Hak, C. C. J. M., & Wenmaekers, R. H. C. (2016). Project Ancient Acoustics Part 2 of 4 : large-scale acoustical measurements in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. In 23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece (blz. 1-8)
Hoekstra, N. ; Nicolai, B. ; Peeters, B.P.A. ; Hak, C.C.J.M. ; Wenmaekers, R.H.C. / Project Ancient Acoustics Part 2 of 4 : large-scale acoustical measurements in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. 23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece. 2016. blz. 1-8
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abstract = "In the last decades we have seen an increased interest in the acoustics of ancient Greek and Roman theatres and much research has been performed on many of them. Research has mainly focused on modelling the acoustics of theatres and has shown various acoustical effects. However, only a limited number of in situ measurements have been available to validate the results. In this paper, results are presented of large-scale measurements which were performed in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. The accuracy of these measurements is discussed in part one of this series of papers. Impulse response measurements have been conducted at respectively 200, 264 and 60 listener positions for 5 equal-angular dodecahedron sound source rotation steps at 2 source positions. In addition, binaural impulse responses were measured using an artificial head on respectively 10, 12 and 3 receiver positions. Finally, speech intelligibility measurements have been carried out in accordance with IEC 60268-16 using a ‘speech source’ that simulates a human voice. In the Odeon of Herodes Atticus, all measurements have been performed in the morning as well as in the evening, showing a minimal discrepancy well within the Just Noticeable Difference (JND) for every discussed parameter. This proves that it is legitimate to compare measurements collected during a full day under slightly different climate conditions. Results for the Odeon of Herodes Atticus show a uniform axisymmetric distribution over receiver positions of common acoustical parameters such as reverberation time, clarity, sound strength and spaciousness. For the theatre of Epidaurus this distribution is non-uniform dueto the opposite-facing seating areas, which is in line with findings from research by others. The results of the speech intelligibility measurements show a declining trend for STI over distance, which contradicts some findings presented in literature.",
author = "N. Hoekstra and B. Nicolai and B.P.A. Peeters and C.C.J.M. Hak and R.H.C. Wenmaekers",
year = "2016",
month = "7",
day = "10",
language = "English",
pages = "1--8",
booktitle = "23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece",

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Hoekstra, N, Nicolai, B, Peeters, BPA, Hak, CCJM & Wenmaekers, RHC 2016, Project Ancient Acoustics Part 2 of 4 : large-scale acoustical measurements in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. in 23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece. blz. 1-8.

Project Ancient Acoustics Part 2 of 4 : large-scale acoustical measurements in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. / Hoekstra, N.; Nicolai, B.; Peeters, B.P.A.; Hak, C.C.J.M.; Wenmaekers, R.H.C.

23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece. 2016. blz. 1-8.

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

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T1 - Project Ancient Acoustics Part 2 of 4 : large-scale acoustical measurements in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos

AU - Hoekstra, N.

AU - Nicolai, B.

AU - Peeters, B.P.A.

AU - Hak, C.C.J.M.

AU - Wenmaekers, R.H.C.

PY - 2016/7/10

Y1 - 2016/7/10

N2 - In the last decades we have seen an increased interest in the acoustics of ancient Greek and Roman theatres and much research has been performed on many of them. Research has mainly focused on modelling the acoustics of theatres and has shown various acoustical effects. However, only a limited number of in situ measurements have been available to validate the results. In this paper, results are presented of large-scale measurements which were performed in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. The accuracy of these measurements is discussed in part one of this series of papers. Impulse response measurements have been conducted at respectively 200, 264 and 60 listener positions for 5 equal-angular dodecahedron sound source rotation steps at 2 source positions. In addition, binaural impulse responses were measured using an artificial head on respectively 10, 12 and 3 receiver positions. Finally, speech intelligibility measurements have been carried out in accordance with IEC 60268-16 using a ‘speech source’ that simulates a human voice. In the Odeon of Herodes Atticus, all measurements have been performed in the morning as well as in the evening, showing a minimal discrepancy well within the Just Noticeable Difference (JND) for every discussed parameter. This proves that it is legitimate to compare measurements collected during a full day under slightly different climate conditions. Results for the Odeon of Herodes Atticus show a uniform axisymmetric distribution over receiver positions of common acoustical parameters such as reverberation time, clarity, sound strength and spaciousness. For the theatre of Epidaurus this distribution is non-uniform dueto the opposite-facing seating areas, which is in line with findings from research by others. The results of the speech intelligibility measurements show a declining trend for STI over distance, which contradicts some findings presented in literature.

AB - In the last decades we have seen an increased interest in the acoustics of ancient Greek and Roman theatres and much research has been performed on many of them. Research has mainly focused on modelling the acoustics of theatres and has shown various acoustical effects. However, only a limited number of in situ measurements have been available to validate the results. In this paper, results are presented of large-scale measurements which were performed in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. The accuracy of these measurements is discussed in part one of this series of papers. Impulse response measurements have been conducted at respectively 200, 264 and 60 listener positions for 5 equal-angular dodecahedron sound source rotation steps at 2 source positions. In addition, binaural impulse responses were measured using an artificial head on respectively 10, 12 and 3 receiver positions. Finally, speech intelligibility measurements have been carried out in accordance with IEC 60268-16 using a ‘speech source’ that simulates a human voice. In the Odeon of Herodes Atticus, all measurements have been performed in the morning as well as in the evening, showing a minimal discrepancy well within the Just Noticeable Difference (JND) for every discussed parameter. This proves that it is legitimate to compare measurements collected during a full day under slightly different climate conditions. Results for the Odeon of Herodes Atticus show a uniform axisymmetric distribution over receiver positions of common acoustical parameters such as reverberation time, clarity, sound strength and spaciousness. For the theatre of Epidaurus this distribution is non-uniform dueto the opposite-facing seating areas, which is in line with findings from research by others. The results of the speech intelligibility measurements show a declining trend for STI over distance, which contradicts some findings presented in literature.

M3 - Conference contribution

SP - 1

EP - 8

BT - 23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece

ER -

Hoekstra N, Nicolai B, Peeters BPA, Hak CCJM, Wenmaekers RHC. Project Ancient Acoustics Part 2 of 4 : large-scale acoustical measurements in the Odeon of Herodes Atticus and the theatres of Epidaurus and Argos. In 23rd Internation Congress on Sound & Vibration (ICSV 2016), 10-14 July 2016, Athens, Greece. 2016. blz. 1-8