Although related, a difference between awakeness and awareness can be captured by the assertion that one must be awake to be aware, but one does not need to be aware to be awake. Sensory maps of various bodily spaces seem to be in this category as well. There is reason to believe that animals or babies can have phenomenally conscious states without employing any concept of self. Dogs and babies may have phenomenally conscious pains without thoughts to the effect that they have those pains. It is in virtue of its phenomenal content that a state is phenomenally conscious, whereas it is in virtue of its representational aspect . . .
Access consciousness is a functional notion.
You were aware of the noise all along, but only at midnight were you consciously aware of it. That is, you were phenomenally conscious of the noise all along, but only at midnight did you become access conscious of it. Conscious' and 'aware' are roughly synonymous, so it is natural to use one for the period before midnight, and both for the period after midnight when there are two kinds of consciousness present.