01 Accord 4cyl Auto 115k EX Super High Pitched Whine

At idle, my car makes a whining noise. Like a very high pitched whine. It's not extremely loud but the pitch is high. It's constant(when at a certain rpm) and its almost as if dogs could probably hear it kinda like a t.V when it turns on. It does this mainly in drive and reverse but sometimes in neutral and park. It usually does not do it in park or neutral. I have noticed that it does it around 2k rpm or 1.8k rpm (and idle). It does it only under very very light throttle and not when v-tec is engaged. I think that's all the details. Car runs fine, I'm just very cautious when it comes to noises. Thanks so much for all your help!