Handbook for Sound Engineers

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213 Chapter 9 Modeling and Auralization by Dominique J. Chéenne, Ph.D. 9.1 Introduction......................................... ...

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Acoustical Modeling and Auralization 215 9.1 Introduction As it is often the case with branches of engineering dealing with the ...

216 Chapter 9 ular after WWII and are still used today by some designers when access to other modeling tools is limited and/or w ...

Acoustical Modeling and Auralization 217 In the absence of acoustical absorption, the relative size of the wavelength of a sound ...

218 Chapter 9 where, m is called the decay index, and it takes into account the temperature and the humidity of the air as a fun ...

Acoustical Modeling and Auralization 219 filter must have a sufficient bandwidth r to avoid limiting the response of the impulse ...

220 Chapter 9 absorption and associated construction techniques is difficult to model accurately. 9.2.2 Computational Models Thi ...

Acoustical Modeling and Auralization 221 also satisfies the boundary conditions that must take place at the surface, that is, th ...

222 Chapter 9 being replaced by sources and there is no theoretical limit to the order of reflection that can be handled by the ...

Acoustical Modeling and Auralization 223 process since virtual sources located beyond a certain distance from the receiver locat ...

224 Chapter 9 One problem associated with the ray-tracing tech- nique is that the accuracy of the detection is strongly influenc ...

Acoustical Modeling and Auralization 225 response can then be recombined to yield a reflectogram that presents a high degree of ...

226 Chapter 9 Solving the fundamental wave equation allows for an exact definition of the acoustic pressure at any specific poin ...

Acoustical Modeling and Auralization 227 planar, or curved) surfaces for which equations are readily available, but for more com ...

228 Chapter 9 Numeric Model: Finite Difference Time-Domain Methodology. As mentioned earlier, the BEA tech- niques are best suit ...

Acoustical Modeling and Auralization 229 room models that typically do not investigate the distri- bution of the sound field at ...

230 Chapter 9 9.2.3.2 Absorption from Trees and Shrubs When dealing with issues related to outdoor noise prop- agation one may n ...

Acoustical Modeling and Auralization 231 9.3 Auralization Auralization is the process of rendering audible, by physical or mathe ...