Acoustical simulation of open-plan offices according to ISO 3382-3
In the new international standard ISO 3382-3 the measurement procedure for open-plan offices is described and a number of new room acoustical parameters for the objective evaluation are defined. Among the new parameters are the privacy distance and the distraction distance, both derived from the STI (speech transmission index). With room acoustic simulation software these […]
Acoustical capacity as a means of noise control in eating establishments
Noise from many people speaking in eating establishments and other social gatherings is a well known and wide spread problem. The problem is particularly difficult to handle because the sound sources are individual and dynamic, i.e. the speech level increases when the ambient noise level goes up. However, a simple prediction model has been derived […]
Prediction of acoustical parameters for open plan offices according to ISO 3382-3
In the new international standard ISO 3382-3 the measurement procedure for open plan offices is described and a number of new room acoustical parameters for the objective evaluation are defined. Among the new parameters are the privacy distance and the distraction distance, both derived from the STI (speech transmission index) as a function of distance […]
Dynamic sound source for simulating the Lombard effect in room acoustic modeling software
The sound from speech when many people are gathered for a social event or in an eating establishment is a challenge for room acoustical modeling, because the sound power of the source varies with the level of the ambient noise, the so-called Lombard effect. A new method has been developed for modeling the ambient noise […]
Heard that? Improving acoustics from the concert hall to the office
Whether listening to a concert, or working in an open plan office, getting the acoustics right is important. The ISO 3382 series on Acoustics – Measurement of room acoustic parameters, is raising acoustic standards in performance spaces, open plan offices and other types of room.
The ISO 3382 parameters. Can we measure them? Can we simulate them?
The measured impulse response is often used as a true reference of a real room impulse response and geometrical acoustic simulations are considered to be only a crude representation of it. However, both approaches have their own challenges and limitations. Geometrical acoustic models do not include wave phenomena, such as interferences and diffraction, as they […]
Computer simulation of the acoustics of the Ear of Dionysius (Syracuse-Italy) in order to evaluate objective descriptors of speech intelligibility
A myth handed down for a long time says that the tyrant of Syracuse Dionysius I (the Elder, ca. 432–367 BC) could understand the speech of war prisoners through a window in the upper part of the innermost wall of the grotto named Ear of Dionysius. Sabine himself who had visited this cave had cast […]
The acoustic correction of classrooms in historical buildings with numerical simulation
Often the classrooms are located in historical buildings, where for aesthetic and historical reasons it is difficult to install sound-absorbing panels for acoustic corrections; the classrooms are not regular in shape and the ceilings are not level [1], [2]. To improve the acoustic characteristics of the classrooms, sound-absorbing materials must be installed in an appropriate […]
The use of colors, animations and auralizations in room acoustics
The use of computer models for acoustical design of auditoria takes advantage of visualization and auralization for several purposes, some of which will be presented. The sound absorption characteristics of materials can be visualized by the use of colors of surfaces in a 3D room model. Calculation results displayed as color maps in a grid […]
Simulations, Measurements and Auralisations in Architectural Acoustics
Room acoustic computer modelling has become an important tool in the acoustical design of rooms, and also the range of applications has increased in recent years. Also the room acoustic measurement technique has developed significantly in recent years, e.g. by new methods in ISO 18233. Considering computer modelling as a simulated measurement means that there […]
