Emotions don't reside in the heart. It's simply a pump for a circulatory system. They're more centered in the brain and involve various chemicals, experiences and memories.
Unless you mean that you literally don't have a heart? In which case, do you lack an entire circulatory system? Or is blood pumped through your body via another means?
Re: Voice;
Unless you mean that you literally don't have a heart? In which case, do you lack an entire circulatory system? Or is blood pumped through your body via another means?