This is such a huge question. I think the official term for my ability is "Vocifery". Someone I met once called it "Resonance". Basically, I can add a pitch to my voice to make stuff happen. such as sudden shrinking, growing, repeating words/phrases, scent or taste altering, emotion manipulation, or even muscle activation beyond ‘normal’ levels to start. I'm not an expert on it though, discovering new things all the time.