I'd like to take a survey of what people think is the dominant convention for local object axes. In the past, I have always oriented characters and objects so that they face towards the negative Z axis in their local coordinate frame. This makes sense for rendering, because it results in X+ going to the right and Y+ as the up direction when viewed from a first-person camera.
This is mostly a question of what I should make the default 'front' direction for directional sound sources. Is the convention to use Z- as the 'look' direction, or perhaps Z+?
I am living in a right-handed world, if that makes a difference.