SOUNDPROOF Meaning of SOUNDPROOF in English soundproof BrE AmE ˈsaʊn d pruːf ⇨ˈsaʊm-, § \ -prʊf ▷ soundproof|ed t▷ soundproof|ing ɪŋ▷ soundproof|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012