A new and distinct cultivar of Oak tree named \u2018Greenenvy\u2019, characterized by its upwardly sweeping lateral branches forming a dense and narrow pyramidal plant form; vigorous growth habit; and relatively large, dark green-colored and glossy leaves. The present invention also allows for treatment of the starting material with the near-critical or supercritical fluid. These separate filters are arranged in the transmission direction upstream of a corresponding four-wiretwo-wire conversion, and in the reception direction downstream of a corresponding two-wirefour-wire conversion, so that the signal stream takes place via these filters in one direction only, and the filters can be designed as purely active filters or digital filters. A laminate layer is attached to the second portion. The system and method may be implemented as part of programmed instructions in a computer system andor a computer readable medium.