A spring arrangement, for use in an artificial reverberation device, includes a mechanically damped, torsionally vibratory, helical spring which is sub-divided into at least two spring portions. Each pair of adjacent spring portions is interconnected by a rigid spindle extending therebetween along the longitudinal axis of the two portions. A damping plate on each spindle lies in a plane substantially perpendicular thereto, and is embraced by a pair of resilient pads engaging opposite surfaces of the plate, the resilient pads preferably comprising foamed plastic. A pair of rigid diaphragm-like clamping members press the pads therebetween so that the damping plate is clamped between the pads. The pressure applied to the pads is preferably adjustable, and the damping members have apertures through which the spindle extends, with these apertures having a diameter smaller than that of the helical spring. The damping plate may have various configurations.
