Application of the Transfer Matrix and Finite Surface Size Correction to Room Acoustics Simulation
Regular paper
Foster + Partners
Tuesday 2 june, 2015, 13:40 - 14:00
0.7 Lisbon (47)
Abstract:
Most large scale acoustic simulations rely on user input of a Sabine or
Eyring-based absorption coefficient in order to describe surface materials.
However, the use of these coefficients assumes a locally reacting absorption
pattern (equal absorption for waves incident from all directions). In reality,
even locally absorbing finish assemblies often absorb in non-locally reacting
ways when installed because of finite sample size and other conditions. Using
the Transfer Matrix Method and a variation on Thomasson's finite size
correction, a method for predicting the absorption of a specified finish from
any location of incidence is presented.