An apparatus for signal processing, wherein a disc is placed on a turntable and is provided with a groove which can be followed by the pick-up element, and employing a time-code signal wherein during use of the disc the said time-code signal controls the digital audio source. The aim of the invention is to provide a device with which damages to sensitive surfaces that are caused by an inadvertent contact with the dimensionally stable material can be substantially avoided. In this way, the accurate masses of subfragments, useful for generating modular structures, can be obtained very rapidly. The electrode arrangement is disposed on the housing and includes a film substrate with electrodes disposed on the film substrate and coupled to the electronic subassembly through the plurality of vias. Subsequently, the combustion product gases are delivered upwardly through the second flow gap or passage. Further, there are disclosed a process for producing the catalyst body, a brush-shaped carbon nanostructure and a process for producing the same.