Method for analyzing the humming tendency of a combustion chamber in an operating state, comprising the steps of: operating the combustion chamber in the operating state; detecting a thermoacoustic variable of the combustion chamber gas volume and/or a vibration variable of the combustion chamber structure in the operating state and determining a characteristic variable from the thermoacoustic variable and/or the vibration variable; determining the spectrum (1, 1', 1") of the characteristic variable in the operating state as the amplitude profile of the characteristic variable over time; identifying a first resonance and a second resonance of the characteristic variable with the aid of the spectrum (1, 1', 1"); determining the amplitude value (2, 2', 2") of the first resonance and the amplitude value (3, 3', 3") of the second resonance; calculating a stability parameter (9, 9') as a function of the amplitude value (2, 2', 2") of the first resonance and the amplitude value (3, 3', 3") of the second resonance; determining the lower distance value and/or the upper distance value by which the stability parameter (9, 9') lies above a lower predetermined threshold value and/or below an upper predetermined threshold value, the threshold values being chosen such that, if the combustion chamber is operated in an operating state with a humming tendency that is just about at a permissible level, the stability parameter (9, 9') in this operating state lies at one of the threshold values; quantifying the humming tendency by means of the lower distance value and/or the upper distance value, the stability parameter (9, 9') being damped over time by a damping function. operating the combustion chamber in the operating state; detecting a thermoacoustic variable of the combustion chamber gas volume and/or a vibration variable of the combustion chamber structure in the operating state and determining a characteristic variable from the thermoacoustic variable and/or the vibration variable; determining the spectrum (1, 1', 1") of the characteristic variable in the operating state as the amplitude profile of the characteristic variable over time; identifying a first resonance and a second resonance of the characteristic variable with the aid of the spectrum (1, 1', 1"); determining the amplitude value (2, 2', 2") of the first resonance and the amplitude value (3, 3', 3") of the second resonance; calculating a stability parameter (9, 9') as a function of the amplitude value (2, 2', 2") of the first resonance and the amplitude value (3, 3', 3") of the second resonance; determining the lower distance value and/or the upper distance value by which the stability parameter (9, 9') lies above a lower predetermined threshold value and/or below an upper predetermined threshold value, the threshold values being chosen such that, if the combustion chamber is operated in an operating state with a humming tendency that is just about at a permissible level, the stability parameter (9, 9') in this operating state lies at one of the threshold values; quantifying the humming tendency by means of the lower distance value and/or the upper distance value, the stability parameter (9, 9') being damped over time by a damping function.