Patent ID: 7783434

Claim:
A mass flow meter, comprising: at least one measurement tube configured to allow a mass to flow therethrough and configured as an oscillation body having an oscillation behavior that is variable as a function of the mass flow, the oscillation body being configured to be set in mechanical oscillation by means of an excitation unit that is driven by an excitation voltage; at least one oscillation sensor configured to record a measurement voltage based on the oscillation behavior of the oscillation body to determine the mass flow; first computational technology means for forming a complex conjugate spectrum from a spectrum of the excitation voltage, and forming a vector product between the complex conjugate spectrum and the measurement voltage, the vector product reflecting a signal relationship between the excitation voltage and the measurement voltage; and second computational technology means for producing a processed measurement voltage based on an inverse Fourier transformation associated with the vector product so that the processed measurement voltage contains a useful signal component corresponding to a noise-filtered version of the measurement voltage.