0 - 1 9 9 2 ). ▁The ▁guer illa ▁( F ML N ) ▁tried ▁to ▁to pp le ▁it ▁on ▁various ▁occasions , ▁but ▁only ▁achieved ▁to ▁sh atter ▁most ▁of ▁its ▁glass - cover ed ▁surface . ▁ ▁Category : Build ings ▁and ▁structures ▁in ▁San ▁Salvador ▁Category : Sk ys c rap ers ▁in ▁El ▁Salvador ▁Category : Build ings ▁and ▁structures ▁completed ▁in ▁ 1 9 8 9 <0x0A> </s> ▁The ▁Yam aha ▁EX 5 ▁is ▁a ▁synth es izer / work station ▁produced ▁by ▁Yam aha ▁from ▁ 1 9 9 8 ▁to ▁ 2 0 0 0 . ▁The ▁EX 5 ▁comb ines ▁several ▁methods ▁of ▁sound ▁generation ▁( see ▁below ). ▁The ▁later ▁released ▁EX 7 ▁was ▁a ▁che aper ▁version ▁of ▁the ▁EX 5 ▁with ▁fewer ▁keys , ▁poly phony , ▁sounds ▁and ▁functions . ▁ ▁Fe atures ▁The ▁Yam aha ▁EX 5 ▁( EX ▁stands ▁for ▁Ext ended ▁Syn thesis ) ▁uses ▁four ▁different ▁tone ▁gener ators ▁for ▁generating ▁sounds . ▁These ▁are ▁A WM 2 ▁( Ad vanced ▁W ave ▁Memory ), ▁AN ▁( Anal og ▁Phys ical ▁Model ing ), ▁F D SP ▁( Form ulated ▁Digital ▁Sound ▁Process ing ) ▁and ▁V L ▁( Virtual ▁Ac oust ic ) ▁synth esis . ▁The ▁fifth ▁sound ▁source ▁is ▁Sample - based ▁synth esis . ▁S ounds ▁can ▁be ▁assemble d ▁up ▁to ▁a ▁maximum ▁of ▁ 4 ▁t ones , ▁each ▁from ▁a ▁different ▁tone ▁generator . ▁ ▁The ▁EX 5