Answer:True
Explanation:The cocktail party effect occurs when we are able to actual filter out any other meaningless noise and focus on one person especially when we are in a noisy environment.
For example when we are in a party we are able to use one ear and pay attention to who we are talking to buy be able to not listen to everyone else around but of course if anyone were to call our names this will immediately gran our attention cause we feel that they may be something important that we need to hear.