Shout, Yell, Scream
noun
A shout voice is a shout or a yell.
さけびごえ
The reading comes from 叫ぶ and 声, put together. Careful of the rendaku.
マミは叫び声を上げながら、ベーコンを上下に動かしました。
Mami lifted the bacon up and down while she screamed.