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This operator makes it possible to calculate the matrix of dynamic transfer functions of a linear mechanical system between two points of the numerical model. The transfer functions can be acceleration, speed or displacement. It is possible to treat the case of absolute or relative movements, under the action of a training load.

It is also possible to obtain the response at any point in the digital model as a function of an output signal entered by the user.

This operator uses as input data the responses of the mechanical system to unidirectional stresses, preferably of the white noise type.

It produces one or two table-type data structures, one for the transfer function matrix, the other for the possible calculated signal.