Patent ID: 7319934
Filing Date: 2008-01-15
Classification: G01N

Abstract:
1. A method for determining acoustic parameters of a liquid in a resonator arrangement having a resonator chamber, comprising the steps of: acoustic excitation of the liquid in the resonator chamber in such a way that a sequence of liquid resonances is excited in a frequency range in which a wall material of the resonator chamber or associated transducers have natural resonances with an amplitude different from zero, measurement of resonance frequencies of the liquid resonances in the resonator chamber, determining observed deviations of the measured resonance frequencies from ideal resonance frequencies in an ideal resonator corresponding to the resonator chamber, calculating a simulation function (y representing calculated deviations of the resonance frequencies from the ideal resonance frequencies with the simulation function (y adapting the calculated deviations to the observed deviations through variation of acoustic parameter variables of the simulation function (y deriving the acoustic parameters sought from the adapted simulation function (y