the utterer of words
an unknown utterer
the original utterer
A: Who was the utterer of that loud noise?
A：那声巨响是谁发出的？
B: We couldn't identify the utterer in the dark.
B：在黑暗中我们无法辨认出发声者。
1) 说话者
2) 发声者
3) 表达者
1. 说话者，发声者
noun
1. A person who speaks or makes a sound.
Synonym: speaker, articulator