Hearing exercise for acting

For the hearing exercise today I decided to go to the student center and listen to the surrounding sounds. I was located in the fireplace lounge and I was able to hear the wind rustle outside the windows at times when there was little other noise around. I also found that the air ducts at times where quite loud in contrast to the quite back round when there was no one around. Occasionally there were a group of people or a individual that would walk by and I could hear their shoes squeak. Another thing that I noticed was that there was never really any true silence and in fact there was always something around that would replace the previous sound. Along with the group of people or the individual people that walked by I also noticed a piano playing in the back round at times, which was surely coming form the piano lounge.
In conclusion I feel that there were many things that I was able to hear during this listening activity that will hopefully improve my acting abilities in the future. Trying to hear some of the more subtle back round sounds, I believe, will become of greater value to me, through future acting activities in class.