Institute of Acoustics

International Conference on Auditorium Acoustics 2008

Proceedings of the Institute of Acoustics Volume 30, Part 3

October 3 - 5, 2008 Oslo, Norway

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Institute of Acoustics International Conference on Auditorium Acoustics 2008

TABLE OF CONTENTS Auditoria in Norway ............................................................................................................................ 1 T. Halmrast

Kilden – Design for a Contemporary Shoebox Concert Hall in Kristiansand............................... 2 H. Butcher, R. Harris

The New Concert Hall in Stavanger ................................................................................................ 10 E. Kahle, H. Moller, T. Ognedal

Renovation of the Concert Hall De Doelen, Rotterdam, the Netherlands Early Reflections Strength and Stage Acoustics .................................................................................... 18 M. Lautenbach, M. Vercammen, K. Lorenz-Kierakiewitz

Concert Hall Stage Acoustics from the Perspective of the Performers and Physical Reality................................................................................................................................. 26 J. Dammerud, M. Barron

An In-depth Analysis of the Double Bass-stage Floor Contact ................................................... 37 K. Guettler, A. Buen, A. Askenfelt

A Loudspeaker Orchestra for Concert Hall Studies...................................................................... 45 J. Patynen, S. Tervo, T. Lokki

The Subjective Assessment of Musicians in Spaces for Music Performance ........................... 53 M. Giovannini, A. Astolfi

Simplified Room Acoustic Measurements ..................................................................................... 61 T. Halmrast, A. Buen

Objective Assessment of Concert Hall Acoustics......................................................................... 70 M. Barron

Will Pure Acoustical Concerts and Opera Performances Survive? ............................................ 79 A. Krokstad

Converting Movie Theatres Into Multi-purpose Concert Halls..................................................... 87 A. Nagy, A. Kotschy, F. Tamas

How Acoustical Engineering Compels Architects to Creativity .................................................. 95 J. Polack, M. Retbi

Ali Qapu: Persian Historial Music Room ........................................................................................ 98 H. Azad

Telepresence Room Acoustics...................................................................................................... 103 O. Bredvei, T. Tronstad, J. Nielsen

How Dry Do the Recordings for Auralization Need to Be?......................................................... 107 A. Buen

Characterizing Sound Sources for Room-acoustical Measurements ....................................... 115 G. Defrance, L. Daudet, J. Polack

Auditorium of the Morgan Library, Computer Aided Design and Post-construction Results ............................................................................................................................................. 123 B. Katz, E. Kahle

Design of Diffuser Profile for a Shoebox Concert Hall Using Scale Models ............................ 131 J.H. Kim, Y.H. Kim, J. Jeon

Investigating the Absorption Characteristics of Open Ceilings in Multi-purpose Halls Using 1:25 Scale Model ........................................................................................................ 137 Y.H. Kim, J. Jeon

Acoustic Design of Theatres for Natural Speech And/or Variable Acoustics .......................... 141 M. Luykx, M. Vercammen, R. Metkemeijer

Time Domain Boundary Element Methods for Acoustic Scattering from Curved Surfaces ........................................................................................................................................... 152 G. Natsiopoulos

Studio Acusticum – a Concert Hall with Variable Volume.......................................................... 158 R. Okvist, A. Agren, B. Tunemalm

Reflector Arrays and Their Frequency Limits – a Status Report ............................................... 163 M. Skalevik

Diffusivity and Its Significance to Effective Seat Absorption in Concert Halls........................ 164 M. Skalevik

On the Influence of Ceiling and Audience Profile on the Reverberation Time and Other Room Acoustical Parameters ............................................................................................. 170 U. Stephenson

Speech Intelligibility and Activity Noise in Open Plan Education Spaces............................... 178 B. Stofringsdal

Artistic Contributions to Ambient Sound Design........................................................................ 188 J. Tro

Re-creating Performing Environment for Poly-choral Music ..................................................... 191 W.C. Wang

An Approach to Orchestral Canopy Design Optimisation.......................................................... 198 M. Whitcroft

Renovation of the Theater Puccini in Milan: Prediction of Acoustic Quality of Two Rooms .............................................................................................................................................. 206 G. Zambon, S. Radaelli

Measurements and Study on Variable Acoustics in Performance Spaces............................... 213 O. Lindfors, H. Moller, A. Ruusuvuori

An Overview of the Acoustics of the Oslo Opera House............................................................ 220 L. Strand

The Acoustic of the Store Sal, Oslo Opera House ...................................................................... 232 J. Newton, R. Harris

Room Acoustics in the Scene II in the New Oslo Opera and the Ridehuset - Two Variable Acoustics Coupled Space Venues................................................................................. 240 A. Buen, L. Strand

Experiences of a Musician of the Oslo Opera.............................................................................. 261 G. Ihlen

Electro-acoustic Systems for the New Opera House in Oslo..................................................... 265 A. Berntson, F. Bye

Performance Hall Acoustics from the Point of View of the Solo Singer ................................... 273 P. Klaveness

Design of Modern Theaters in Brazil............................................................................................. 277 J. Nepomuceno

The Acoustic Design of the Elisabeth Murdoch Hall, Melbourne, Australia............................. 285 R Orlowski, S. Jones

Subjective Evaluation of the Beijing National Grand Theatre of China .................................... 286 C. Rougier, I. Schmich, Z. Xiangdong, Y. Xiang, L. Guo-Qi

The St Michaelis Church in Luneburg: an Example for Changing Room Acoustics ............... 294 J. Meyer

The Acoustical Survival of San Vitale, Ravenna, Italy Through Two Millennia ........................ 301 L. Tronchin, D. Knight

Acoustics of Traditional Chinese Theaters .................................................................................. 309 W. Chiang, W. Lin, Y. Hsu

Room Acoustic Parameters and Their Distribution Over Concert Hall Seats .......................... 316 M. Skalevik

Subjective Evaluation of the Acoustics of Jazz Auditoria; Multi-dimensional Description of Evaluations............................................................................................................. 326 A. Sotiropoulou, G. Poulakos, J. Karayannis, J. Tzouvadakis

Auralisation of Concert Halls Using Multi-source Representation of a Symphony Orchestra ......................................................................................................................................... 333 J. Rindel, C. Christensen

Acoustics of the New Theatre Auditorium (tap) in Poitiers, France: Concert Hall and Opera Theatre .......................................................................................................................... 339 D. Commins

Volumetric Diffusers Inspired by Percolation Fractals ............................................................... 349 T. Cox, R. Hughes, J. Angus, D. Whittaker, M. Pogson, G. Gehring

Diffuser Design for the New Ifez Arts Center Concert Hall Using Scale Models...................... 357 J. Jeon, Y.H. Kim

The Acoustics of the New Symphonic Hall in Aarhus, Denmark .............................................. 364 D. Kleener, R. Ballinger, C. Fog

Author Index