sound of laughter; laughing voice
Refers to the audible sound of someone laughing, not the act of laughing itself.
隣の部屋から笑い声が聞こえた。
I heard laughter from the next room.
彼女の笑い声はとても明るい。
Her laugh is very cheerful.
The sound of children's laughter came from the next room.
She let out a loud laugh when she heard the story.
There's the sound of laughter coming from the TV.