Archives of Acoustics, 39, 3, pp. 307-318, 2014

Virtual Acoustics

Institute of Technical Acoustics RWTH Aachen University

Virtual Reality (VR) systems are used in engineering, architecture, design and in applications of biomedical research. The component of acoustics in such VR systems enables the creation of audio-visual stimuli for applications in room acoustics, building acoustics, automotive acoustics, environmental noise control, machinery noise control, and hearing research. The basis is an appropriate acoustic simulation and auralization technique together with signal processing tools. Auralization is based on time-domain modelling of the components of sound source characterization, sound propagation, and on spatial audio technology. Whether the virtual environment is considered sufficiently accurate or not, depends on many perceptual factors, and on the pre-conditioning and immersion of the user in the virtual environment. In this presentation the processing steps for creation of Virtual Acoustic Environments and the achievable degree of realism are briefly reviewed. Applications are discussed in examples of room acoustics, archeological acoustics, aircraft noise, and audiology.
Keywords: acoustic virtual reality, simulation, auralization.
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).


M. Kleiner, B. I. Dalenbäck, and U. P. Svensson, Auralization - An Overview. J. Audio Eng. Soc. 41 (1993) 861

A. Krokstad, S. Strøm and S. Sørsdal, Calculating the acoustical room response by the use of a ray tracing technique. J. Sound Vib. 8 (1968) 118

M. Vorländer, Simulation of the transient and steady state sound propagation in rooms using a new combined sound particle - image source algorithm. J. Acoust. Soc. Am. 86 (1989) 172

G.M. Naylor, ODEON - Another Hybrid Room Acoustical Model, Applied Acoustics 38 (1993) 131

B.-I. Dalenbäck, Room Acoustic Prediction Based on a Unified Treatment of Diffuse and Specular Reflection, J. Acoust. Soc Am. 100 (1996) 899

L. Savioja, J. Huopaniemi, T. Lokki, and R. Väänänen, Creating interactive virtual acoustic environments. J. Audio Eng. Soc. 47 (1999) 675

R. Lyon, Theory and Application of Statistical Energy Analysis. Butterworth-Heinemann 2nd edition 1994

E. Gerretsen, Calculation of airborne and impact sound insulation between dwellings. Applied Acoustics 19 (1986) 245

M. Vorländer, R. Thaden, Auralisation of airborne sound insulation in buildings. Acustica united with Acta Acustica 86 (2000) 70

M. Vorländer, Auralization - Fundamentals of Acoustics, Modelling, Simulation, Algorithms and Acoustic Virtual Reality. Springer, 2008.

M. Vorländer, D. Schröder, S. Pelzer, F. Wefers, Virtual Reality for Architectural Acoustics. Journal of Building Performance Simulation (2014) doi:10.1080/19401493.2014.888594

W. G. Gardner, Efficient convolution without input-output delay. J. Audio Eng. Soc. 43 (1995) 127

F. Wefers, M. Vorländer, Optimal filter partitions for real-time FIR filtering using partitioned FFT-based convolution in the frequency domain”, Proc. 14th International Conference on Digital Audio Effects, DAFx Paris, France (2011)

F. Wefers, M. Vorländer, Potential of non-uniformly partitioned convolution with freely adaptable FFT sizes. Proc. AES 133rd Convention, San Francisco, CA, USA, 2012

J. Blauert, Spatial Hearing – The Psychophysics of Human Sound Localization, revised edition. MIT Press, 1996

M.D. Burkhard, R.M. Sachs, Anthropometric manikin for acoustic research, J. Acoust. Soc. Am. 58 (1975) 214

B. Katz, Boundary element method calculation of individual head-related transfer function. I. Rigid model calculation, J. Acoust. Soc. Am. 110 (2001) 2440

M. Pollow, B. Masiero, P. Dietrich, J. Fels, M. Vorländer, Fast measurement system for spatially continuous individual HRTFs. Proc. Ambisonics, York, UK (2012)

S. Pelzer, L. Aspöck, D. Schröder, M. Vorländer, Integrating Real-Time Room Acoustics Simulation into a CAD Modeling Software to Enhance the Architectural Design Process. Buildings 2 (2014) 113

D. Schröder, F. Wefers, S. Pelzer, D. Rausch, M. Vorländer, T. Kuhlen, Virtual Reality System at RWTH Aachen University. In Proceedings of the International Symposium on Room Acoustics (ISRA), Melbourne, Australia, 2010

M. Schröder, Die statistischen Parameter der Frequenzkurven von großen Räumen, Acustica 4 (1954), 595

J. B. Allen, D. A. Berkley, Image Method for Efficiently Simulating Small-Room Acoustics. J. Acoust. Soc. Am. 65 (1979) 943

U. P. Svensson, R. I. Fred, J. Vanderkooy, An analytic secondary source model of edge diffraction impulse responses. J. Acoust. Soc. Am. 106 (1999) 2331

U. M. Stephenson, Simulation of diffraction within ray tracing. Acta Acustica united with Acustica 96 (2010) 516

D. Botteldooren, Finite-difference time-domain simulation of low-frequency room acoustic problems, J. Acoustic. Soc. Am. 98 (1995) 3302

L. Savioja, Real-Time 3D Finite-Difference Time-Domain Simulation of Mid-Frequency Room Acoustics, Proc. 13th International Conference on Digital Audio Effects, DAFx Graz, Austria (2010) p43

Pelzer, S., M. Aretz, M. Vorländer, Quality assessment of room acoustic simulation tools by comparing binaural measurements and simulations in an optimized test scenario. Proc. Forum Acusticum Aalborg (2011)

M. Vorländer, Computer simulations in room acoustics: Concepts and uncertainties. J. Acoust. Soc. Am. 133 (2013) 1203

F. Wefers, D. Schröder, S. Pelzer, M. Vorländer, Real-time filtering for interactive virtual acoustic prototyping, Proc. Euronoise 2009, Edinburgh, October 2009

D. Schröder, Physically Based Real-time Auralization of Interactive Virtual Environments. PhD thesis, RWTH Aachen University, 2011.

A. Chandak, L. Antani, M. Taylor, D. Manocha, Fast and Accurate Geometric Sound Propagation Using Visibility Computations, Proc. International Symposium on Room Acoustics (ISRA), Melbourne (2010)

R. Opdam, D. de Vries, M. Vorländer, Locally or non-locally reacting boundaries: Does it make a significant acoustic difference? Proc. International Symposium on Room Acoustics (ISRA) Toronto (2013)

T.H. Schultz, B.G. Watters, Propagation of Sound across Audience Seating, J. Acoust. Soc. Am. 36 (1964) 885

M. Vorländer, Simulation and Evaluation of Acoustic Environments. Proc. International Symposium on Room Acoustics (ISRA) Toronto (2013)

T. Lokki, Sensory evaluation of concert hall acoustics, Proc. 21st International Congress on Acoustics (ICA) Montreal (2013)

J. Blauert, A. Raake, Listening and Assessing with Binaural Models. Proc. EAA Auralization and Ambisonics Symposium, Berlin (2014)

H.-J. Maempel, M. Jentsch, Audio-visual interaction of size and distance perception in concert halls - a preliminary study, Proc. International Symposium on Room Acoustics (ISRA) Toronto (2013)

ARUP acoustics, How will the proposed High Speed 2 railway effect the life of communities along the route? Predicting, mitigating, auralising and presenting the results in a way that people can understand. Workshop at IoA Conference Reproduced Sound, Brighton (2012)

A. Pedrero, M. Pollow, P. Dietrich, G. Behler, M. Vorländer, C. Díaz, A. Díaz, Mozarabic Chant anechoic recordings for auralization purposes. Proc. FIA Évora, Portugal (2012)

A. Pedrero, A. Díaz-Chyla, S. Pelzer, M. Pollow, C. Díaz, M. Vorländer, Auralización del canto mozárabe en una iglesia pre-románica. Proc Tecniacustica Valladolid (2013) 1448

J. Fels, M. Vorländer, Dynamische Raumakustiksimulation für die Hörgeräteentwicklung und -anpassung, Proc. 17th DGA conference, German Audiological Society, Oldenburg (2014)

L. Savioja, Trends in Room Acoustics Modeling (keynote lecture), EAA Auralization and Ambisonics Symposium, Berlin (2014)

PEAQ - Perceptual Evaluation of Audio Quality (PEAQ). ITU BS.1387 (1999)

A. Lindau, S. Weinzierl, Assessing the Plausibility of Virtual Acoustic Environments. Acta Acustica united with Acustica, 98 (2012), 804

DOI: 10.2478/aoa-2014-0036