The Effect of Direct Field Component on A Statistical Energy Analysis (SEA) Model
Statistical Energy Analysis (SEA) is a well-known method to analyze the flow of acoustic and vibration energy in a complex structure. The structure is divided into subsystems where the energy in each of the subsystem is assumed to be reverberant. This study investigates the application of SEA mod...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications
2014
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/10724/1/The_EFfect_of_Direct_Field_Component_on_A_Statistical_Energy_Analysis.pdf http://eprints.utem.edu.my/id/eprint/10724/ |
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| Summary: | Statistical Energy Analysis (SEA) is a well-known method to analyze the flow of acoustic
and vibration energy in a complex structure. The structure is divided into subsystems where the
energy in each of the subsystem is assumed to be reverberant. This study investigates the application
of SEA model in a 'damped' acoustic space where the direct field component from the sound source
dominates the total sound field rather than a diffuse field in a reverberant space which the SEA
model assumption is based on. A measurement was conducted in a scaled room divided into two
acoustic spaces separated by a partition with an opening. Absorbent materials were installed on the
room walls and the power injection technique was implemented to obtain the coupling loss factor
(CLF) of the system. It is found that correction of the direct field component from the subsystem
energy improves the prediction of the CLF of the system. |
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