Abstract
This report describes the active control systems of floor impact noise. The systems are comprised of actively controlled modular panels of light weight, which wholly cover the surface of concrete slab structure in the ceiling, and in each of which the mechanical vibration is controlled independently with moving coil actuators. In this report, first, vibration control system is presented. Second, acoustic evaluation of active insulation panel is presented. In the latter evaluation lower performance was acknowledged than expected from the former measurement, due to less computing precision of micro-computer controller.
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