The Journal of the Acoustical Society of America · 1984 · 389 citations · 0 references
ArchitectureArchitectural EngineeringAcousticsComputational AcousticsGeometric ModelingAcoustic ModelingAcoustic Source ModelingArchitectural AcousticsConcert Hall AcousticsRoom AcousticsSpatial AudioAcoustic Ray TracingComputational Room AcousticsGeometric Acoustic ModelingGeometric AcousticsImpulse ResponseImpulse Response ModelingRoom Acoustics ModelingSpatial Impression
The paper extends the image model to arbitrary polyhedra with any number of sides. The authors compute image positions that can be reduced to directional impulse responses, enabling audible simulations of concert halls. This generalization allows more accurate modeling of real concert halls, reveals that rectangular halls offer superior spatial impression compared to fan‑shaped halls, and demonstrates advantages over ray tracing.
In this paper, the image model is extended to arbitrary polyhedra with any number of sides. This generalization makes it possible to model real concert halls much more accurately. The image positions computed by the method can be reduced to the directional impulse response in order to create audible simulations of the concert hall. Also, the image model can provide insight into the fundamental acoustical properties of different concert hall geometries. For example, the extended image model demonstrates that rectangular halls have an advantage over fan-shaped halls with regard to spatial impression. We also show why the image model has fundamental advantages over another popular modeling technique, ray tracing.