In this note we intend to analyse the dependence of the time of structural reverberation Ts in accordance to the type of junction, and to this purpose two adjacent environments are considered, interested by airborne sound transmission. Firstly the variation of Kij is appraised to the different paths of flanking, and also the variation of Ts, of the nature of the elements and of the frequency and finally the variation of the level of the difference of speed Dvij, all in situ. The first results highlight the dependence of the behaviour of the parameters quoted in relationship to the masses of the elements and finally the variation d Ts will be analysed in relationship to the type of junction.
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