When a person can't recognize faces due to some damage in the brain, it is called prosopagnosia.
When a person can't recognize colors due to some damage in the cerebral cortex, it is called cerebral achromatopsia (a type of color blindness, different from color blindess that is resulted by the abnormalities in the cells of the retina).
So is there a technical term for the disorder of not being able to recognize voices due to certain damage in the brain? [Can't know who is speaking just from hearing but do understand the content]