1. A device for detecting the current state of damage of a machine, comprising: a plurality of pressure sensors for detecting the pressure over a time period of the machine to be monitored and outputting a plurality of pressure signals, wherein the pressure signals exist in the time domain, and a data detection and processing apparatus for detecting the pressure signals from the pressure sensors and processing the pressure signals, wherein: the data detection and processing apparatus comprises a fast Fourier analysis device for carrying out a transformation of the pressure signals existing in the time domain into a frequency domain as discrete-time frequency spectra; the data detection and processing apparatus furthermore comprises a spatial aggregation unit and a temporal aggregation unit, which combine the discrete-time frequency spectra, such that temporally and spatially aggregated discrete frequency spectra are generable, wherein the application of the spatial aggregation unit and also the application of the temporal aggregation unit is performable in a different sequence on the discrete-time frequency spectra; the data detection and processing apparatus moreover includes a cepstrum analysis unit for generating a cepstrum with different actual cepstra values from the temporally and spatially aggregated discrete frequency spectra; wherein the data detection and processing apparatus moreover includes a computer unit, which, from the cepstra generated, generates actual cepstra intervals in a predefined time interval, said actual cepstra intervals comprising a plurality of adjacent actual cepstra values, as a result of which an actual cepstrum value, which is establishable from at least three adjacent actual cepstra intervals, is generable; and wherein the data detection and processing apparatus comprises a unit which calculates a comparison of the actual cepstrum value generated and an intended cepstrum value determined in advance.