3.2 The Measurement Tools
The available measurement tools include
sound pressure based insertion loss measurement
by means of ISO 11820 in a reverberation room
using real engines, transmission loss
measurement using the three microphone method
[3] and transfer matrix measurements by means
of the 2-load or the 2-source method [4]. The 2-
source method was chosen as it offers the highest
accuracy for comparison with the simulations.