At least one Helmholtz damper is arranged at a combustion chamber for a
gas turbine in order to damp thermoacoustic oscillations; the damping
volume of this Helmholtz damper is in communication with the combustion
chamber via a connecting passage. Optimum damping is achieved in a simple
way by virtue of the Helmholtz damper being designed in such a manner
that its damping frequency is adjustable.