Une équation matricielle des pavillons acoustiques
1993
A matricial equation for acoustic horns is derived, based on the modal decomposition in a waveguide with uniform cross section. Mode coupling at infinitesimal step discontinuities is described by a matrix independent of the axial coordinate. Two first order equations are derived, defining a matricial transmission line, then a second order equation is obtained for the acoustic pressure, generalising the classical horn equation
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