( ( Analog circuits ) ( ( can ( ( ( represent ( color changes ) ) ( as ( phase shifts ) ) ) ( ( much ( more accurately ) ) ( than ( ( as voltage ) levels ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Analog) (NNS circuits)) (VP (MD can) (VP (VB represent) (NP (NN color) (NNS changes)) (PP (IN as) (NP (NN phase) (NNS shifts))) (ADVP (ADVP (RB much) (RBR more) (RB accurately)) (PP (IN than) (NP (ADJP (RB as) (JJ voltage)) (NNS levels)))))) (. .)))
Analog circuits can represent color changes as phase shifts much more accurately than as voltage levels.
(ROOT (S (NP (NNP Voltage)) (VP (VBZ is) (ADJP (RB continuously) (VBG changing) (PP (IN within) (NP (NP (DT a) (NN circuit)) (PP (IN in) (NP (DT an) (JJ analog) (NN signal))))))) (. .)))