A method of determining noise in a CATV channel, wherein the CATV channel comprises a predetermined frequency band, that employs digital signal processing to isolate the noise signal from an in-service television signal. A vehicle position is determined utilizing position-related data obtained from a position module. A phase inverting mechanism inverts the phase by resonating with a sound of a specific frequency radiated from the loudspeaker unit into the hollow chamber and radiates this sound to outside. This can be done in an agitated reactor with sequential addition of the organic and inorganic acids. The configurable properties define which user-mode worker process is to handle HTTP requests. The filtered outputs are then added, combined or otherwise processed to detect noise contained therein.