Oj LOGARITHMIC V'JiS 3 x 3'CYCLES xrUFFEL & tS 1 i i r i THT ± i -Ft-i B ; r '-u - 44 £ i " zt 4 LI] i 4- -L -t- “+ - r+m j. L ■H £ TZ s^ / / FIGURE 4 / 2. 4 rr — .1!4, i t L - 4 4 T t 4 + +■ t i-i- 4Xt 4 TTTT = t