FRACTIONAL MODELS OF LOUDSPEAKER COILS

In this paper we use fractional pseudo-differential operators in distributional spaces. They are defined via a functional calculus based on Fourier transforms. This procedure is briefly sketched. It turned out that this approach provides very good few-parameter models, particularly for processes which are governed by memory effects. In previous papers we have shown this along measurements and calculations on viscoelastic media. Here we present results on the behaviour of (soft iron core) loudspeaker coils.