The system includes a transmitter for generating a signal and a cyclic prefix, wherein the transmitter suppresses a plurality of sub-symbols of the signal to produce a partial response signal. Each of the non-oiled metal rollers includes a coating that is oleophobic that has low adhesion toward the solid ink image but sufficient lateral friction as to not slide against the ink or paper web. Essentially, the acoustical signal will be decomposed into the Intrinsic Mode Function Components. The at least two recesses selectively receive and retain one or more panel elements. The combined degassing and flotation tank is particular suited for use in oil production at sea for removal of oil and gases from water streams before the water is returned to the sea.