3. Physical principles involved in the transmission of sound waves through walls
Transmission mechanisms at the interface of two media can give rise to highly complex energy transfers involving behavior laws that incorporate the principles already described in the study of reflection, and also bring into play :
structural propagation ;
refraction and diffraction ;
modal response and wall radiation.
The study of these different modes of action constitutes the field of acoustic transparency.
3.1 Acoustic transparency: general concepts
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Physical principles involved in the transmission of sound waves through walls
Appendix A: Plate vibration
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