In the environmental domain, A7hz is particularly specialized in acoustic and vibration impact studies for urban planning, structure-borne noise in buildings, vibrations transmission in the ground and railways. In architecture, we have extensive experience in building studies as a whole and room acoustics optimization. We also design solutions to control industrial noise and mechanical equipment. Already backed by our multiple experiences, we are constantly looking to deepen our knowledge through new methods of measurement and calculation but also looking for new quality materials and innovative solutions. A7hz set two goals: excellence in expertise and providing useful and clear recommendations.