An elaborate experimental study is c a r r i e d out on the effect of the design of sound transmission r o o m s on the sound transmission loss of a l a m i n a t e d glass panel. Systematic comparisons have b e e n m a d e b e t w e e n the results o b t a i n e d by the sound intensity m e t h o d and the conventional t w o -r o o m m e t h o d . R e s e a r c h has b e e n done to learn the influence of the niche, the r o o m volumes, the loudspeaker and microphone positions, the m e a s u r i n g direction, and the diffusor elements. Also, the influence of field reactivity in the r e c e i v i n g r o o m has b e e n s t u d i e d w i t h the intensity t e c h n i q u e .

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