▁/ ▁ ▁Hel ena ▁Su k ová ▁defeated ▁ ▁Ste ff i ▁Graf ▁/ ▁ ▁Gab ri ela ▁Sab at ini ▁ 6 – 7 ( 5 – 7 ), ▁ 7 – 6 ( 7 – 5 ), ▁ 6 – 3 ▁ ▁References ▁ ▁External ▁links ▁ ▁International ▁Tennis ▁Federation ▁( IT F ) ▁tournament ▁edition ▁details ▁ ▁Tournament ▁draw s ▁ ▁Virginia ▁S lim s ▁of ▁Chicago ▁Category : Amer ite ch ▁Cup ▁Category : 1 9 8 6 ▁in ▁sports ▁in ▁Illinois ▁Category : Nov ember ▁ 1 9 8 6 ▁sports ▁events ▁in ▁the ▁United ▁States ▁Virgin <0x0A> </s> ▁D uck ing ▁is ▁an ▁audio ▁effect ▁commonly ▁used ▁in ▁radio ▁and ▁pop ▁music , ▁especially ▁dance ▁music . ▁In ▁du ck ing , ▁the ▁level ▁of ▁one ▁audio ▁signal ▁is ▁reduced ▁by ▁the ▁presence ▁of ▁another ▁signal . ▁In ▁radio ▁this ▁can ▁typically ▁be ▁achieved ▁by ▁lower ing ▁( du ck ing ) ▁the ▁volume ▁of ▁a ▁secondary ▁audio ▁track ▁when ▁the ▁primary ▁track ▁starts , ▁and ▁lif ting ▁the ▁volume ▁again ▁when ▁the ▁primary ▁track ▁is ▁finished . ▁A ▁typical ▁use ▁of ▁this ▁effect ▁in ▁a ▁daily ▁radio ▁production ▁routine ▁is ▁for ▁creating ▁a ▁voice - over : ▁a ▁foreign ▁language ▁original ▁sound ▁is ▁dub bed ▁( and ▁du ck ed ) ▁by ▁a ▁professional ▁speaker ▁reading ▁the ▁translation . ▁D uck ing ▁becomes ▁active ▁as ▁soon ▁as ▁the ▁translation ▁starts . ▁ ▁In ▁music , ▁the ▁du ck ing ▁effect ▁is ▁applied ▁in ▁more ▁s oph