Conference_programme: 18.4 - Office noise : psychological effects and room acoustic design
Lecture: Evaluating room acoustic quality in open-plan offices by adding the distribution of possible source and receiver positions to the simulation
Author(s): Dickschen Alexander, Bertazzoni Rebecca, Liebl Andreas
Summary:
Acoustics in open-plan offices is often described by the parameters of ISO 3382-3. The standard was designed for acoustical measurement, which means that it samples a number of measurement points forming straight lines from a single sound source (loudspeaker), called paths. Those paths are used to calculate the parameters and deduce the properties of the entire room.\n\nWhen parameters of ISO 3382-3 are used as design target values in building projects, it heavily depends on the paths selected, whether the targets are fulfilled or not. So the selection of the “right” paths helps engineers to fulfil requirements, however, for office staff the quality on paper may not materialise. For them, the sources close to one’s own desk are dominant and determine the perceived annoyance and impairment of performance. The question is how many of the sources further away are fully intelligible. As first estimate, the distraction radius rD can answer this, however, it does not tell anything about the number of potential speakers found within this radius. A systematic approach to fully reflect the impact of the multi-talker environment in the open-plan office is missing.\n\nIn room acoustical simulation, the limitations of measurements do not apply. Here, all room transfer functions between all workstations can be calculated without the time restriction of measurements. In simulations there is the potential to analyse the entire room acoustical system of senders and receivers.\n\nIn this talk, results from a simulation series are used to assess the importance of geometry of ground plots on acoustical quality. A new model based on the speech transfer function STI will be presented to objectively compare the acoustical performance of entire rooms. The new parameter opens the way to further optimise layouts and may be helpful for researchers and practitioners alike.
Corresponding author
Name: Mr Alexander Dickschen
e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Country: Germany
