Modelling the Group Size for Prediction of the Noise Level in Eating Establishments
Invited paper
Lloyd's Register Consulting
Wednesday 3 june, 2015, 10:00 - 10:20
0.9 Athens (118)
Abstract:
This paper is concerned with prediction of the noise level in large eating
establishments. As part of a recent study of the subjective concept of
acoustic comfort in eating establishments, an attempt was made at expanding
the prediction model for the ambient noise level in eating establishments
proposed by Rindel, by inserting a model for the group size parameter.
In this project, the noise level and impulse response was measured in five
different eating establishments in order to compute several different
objective acoustic parameters for each of the rooms. The group size parameter
was investigated in two different ways; as a single-number average parameter
for each eating establishment and as a time-varying parameter. A linear
regression analysis using several different objective parameters, including
room dimensions and the acoustic room parameters from the IR measurements,
resulted in models for both types of group size parameter. In the end, a model
for the average group size with the average number of people, the ceiling
height and the Definition (D<sub>50</sub>) as variables, was used to expand
Rindel’s model for the noise level in eating establishments, making the
prediction model reliant on simple objective parameters.