The growing interest in natural or hybrid ventilation systems makes a challenge for good integration of openings in building facades. In a noisy environment, there is an important limitation for the use of direct openings with common building envelopes. As a part of a research project dedicated to this problem, it is possible to evaluate the impact of a curtain wall before testing several double-skin configurations. Experimental measurements made in laboratory conditions lead to the estimation of usual noise reduction and sound transmission class. Moreover, the airflow capacity can be assessed as a function of the aperture. Analyzing those parameters together should give useful information for the design of passive ventilation with a significant airflow when acoustical performance is an important issue.
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