How does interference and medium affect the use of drums?

[mraads]

Hi i am a senior that needs helps as soon as possible since its due TOMORROW! My problem is that I have to address interference and medium in the use of drums

 

[Dick]

If it's really urgent you had better post in the homework forums, General Physics is for more general relaxed discussion. But you'll also need to a lot better job of asking a definite question. That is just impossibly vague.