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Corrected Statistical Energy Analysis Model in a Non-Reverberant Acoustic Space

Al Munawir1, Azma Putra2,*, Iwan Prasetiyo3, Wan Mohd Farid Wan Mohamad2, Safarudin Herawan4

1 Jurusan Teknik Mesin, Universitas Teuku Umar, Meulaboh, 23615, Indonesia
2 Fakulti Kejuruteraan Mekanikal, Universiti Teknikal Malaysia Melaka, Melaka, 76100, Malaysia
3 Acoustic Laboratory, Department of Engineering Physics, Institut Teknologi Bandung, Bandung, 40132, Indonesia
4 Department of Industrial Engineering, Bina Nusantara University, Jakarta, 11480, Indonesia

* Corresponding Author: Azma Putra. Email: email

Sound & Vibration 2021, 55(3), 203-219.


Statistical Energy Analysis (SEA) is a well-known method to analyze the flow of acoustic and vibration energy in a complex structure. This study investigates the application of the corrected SEA model in a non-reverberant 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 classical SEA model assumption is based on. A corrected SEA model is proposed where the direct field component in the energy is removed and the power injected in the subsystem considers only the remaining power after the loss at first reflection. Measurement was conducted in a box divided into two rooms separated by a partition with an opening where the condition of reverberant and non-reverberant can conveniently be controlled. In the case of a non-reverberant space where acoustic material was installed inside the wall of the experimental box, the signals are corrected by eliminating the direct field component in the measured impulse response. Using the corrected SEA model, comparison of the coupling loss factor (CLF) and damping loss factor (DLF) with the theory shows good agreement.


Cite This Article

Munawir, A., Putra, A., Prasetiyo, I., Mohd, W., Herawan, S. (2021). Corrected Statistical Energy Analysis Model in a Non-Reverberant Acoustic Space. Sound & Vibration, 55(3), 203–219.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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