Strange sounds and thoughts during meditation?

The following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Questioner (Q): I have a question on my practice.

So, when I notice thoughts arising or the sounds of the cars, when I notice them in my awareness, I will ask, “To whom is this arising?” And sometimes I’ll go, “Oh! They will just disappear and won’t bother me.” And, I guess…