It will be recognized that difference signal E 246 can be biased by adjusting the weighting factors a and b toward average voltage control, rms voltage control, or {HEAD ~ a selected weighted combination} of {TAIL ~ average voltage} and rms voltage control 
It will be recognized that difference signal E 246 can be biased by adjusting the weighting factors a and b toward average voltage control , rms voltage control , or { HEAD ~ a selected weighted combination } of { TAIL ~ average voltage } and rms voltage control
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH