悪声[akusei] bad voice
雨声[usei] sound of rain
怨声[ensei] complaint
黄色い声[kiiroikoe] shrill voice
音声[onsei] voice

音声圧縮[onseiasshuku] voice compression
音声学[onseigaku] phonetics
仮声[kasei] falsetto
家声[kasei] honour of the family
蚊のささやくような声[kanosasayakuyounakoe] faint voice

汚濁[odaku] pollution
溷濁[kondaku] turbidity
清濁[seidaku] good and evil
濁す[nigosu] to make muddy (a liquid)
濁り[nigori] muddiness

濁り点[nigoriten] voiced consonant marks
濁る[nigoru] to become muddy
濁音[dakuon] sonant
濁点[dakuten] voiced consonant marks (nigori)
濁流[dakuryuu] muddy stream