EXACT NOISE CANCELLATION FOR 1D-ACOUSTIC PROPAGATION SYSTEMS

This paper deals with active noise control applied to a one-dimen-sional acoustic propagation system. The aim here is to keep over time a zero noise level at a given point. We aim to design this control using noise measure-ment at some point in the spatial domain. Based on symmetry property, we are able to design a feedback boundary control allowing this fact. Moreover, using D'Alembert formula, an explicit formula of the control can be computed. Even if the focus is made on the wave equation, this approach is easily extend-able to more general operators.