( ( ( decibel Decibels ) ( -LRB- ( ( abbreviated dB ) -RRB- ) ) ) ( ( are ( ( the unit ) ( of ( measuring ( ( ( the loudness ) ( -LRB- ( ( or intensity ) -RRB- ) ) ) ( of sounds ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ decibel) (NNS Decibels)) (PRN (-LRB- -LRB-) (NP (JJ abbreviated) (NN dB)) (-RRB- -RRB-))) (VP (VBP are) (NP (NP (DT the) (NN unit)) (PP (IN of) (S (VP (VBG measuring) (NP (NP (NP (DT the) (NNS loudness)) (PRN (-LRB- -LRB-) (NP (QP (CC or) (CD intensity))) (-RRB- -RRB-))) (PP (IN of) (NP (NNS sounds))))))))) (. .)))
decibel Decibels (abbreviated dB) are the unit of measuring the loudness (or intensity) of sounds.
(ROOT (S (NP (NNP Decibel)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (VP (VBN used) (S (VP (TO to) (VP (VB measure) (NP (NP (DT the) (NN intensity)) (PP (IN of) (NP (JJ sound) (NNS waves)))))))))) (. .)))