防ぼう音おん壁へきMeaningsNoun1. noise barrier; soundproof wall; soundwall; sound barrierKanji used防prevent音sound壁wallPitch accentぼうおんへきComposed of防ぼう音おんsoundproofingNoun壁へきwall; partition; barrier; obstacle; hindrance; difficulty; Chinese "Wall" constellation (one of the 28 mansions)Noun