Modelling Sound Distribution Systems in Room Acoustical Computer Model
A method for modelling sound distribution systems, using multiple electroacoustic sources is described. The method implies not only source-directivity, -gain, -equalization, and -delay, but also room geometry as well as absorption- and diffusion-coefficients for the surface materials. Room acoustical calculations for a large cathedral are presented, visually by mapping of parameters, reflectograms, reflection paths, and […]
International Round Robin on Room Acoustical Computer Simulations
14 different programs for room acoustical computer simulations were compared regarding the results of 8 acoustical criteria (T, EDT, D, C, TS, G, LF and LFC) in a speech auditorium. 2 source positions and 5 receiver positions were chosen and the criteria were calculated for the 1 kHz octave band. The simulations were carried out […]
Predicting the Acoustic influence of scale model modifications using a hybrid model
Oslo Consert hall, Acoustic Tests, simulations and TOR-measurements (Through Orchestra Impulse Response)
The Sigyn Hall, Turku – a concert hall of glass
Use of the Odeon Room acoustic modelling program in design
Computer aided acoustical modelling as a tool for industrial noise control
Applications of a system for two-channel auralization using ODEON-SOUND
Computer simulation techniques for the acoustical design of rooms – how to treat reflections in sound field simulation
The paper presents a number of problems related to sound reflections, and possible solutions or approximations that can be used in computer models. The problems include: specular and diffuse reflections, early and late reflections, curved surfaces, convex and concave surfaces, diffraction due to finite size of surfaces, scattering due to rough structure of surfaces, angle […]
On the modelling of diffuse reflections in room acoustics prediction
Partial diffraction ard scattering play an important role in the reflection of acoustic waves by a real-life wall surface. In the modelling of the acoustic sourd fields inside an enclosed space, the incorporation of such diffraction and scattering effects can greatly improve the accuracy of the modelling. In commonly used room acoustics prediction models, such […]
