How Does Sound Affect Bacteria Growth

My goal for this project was to see how sound affects bacteria growth. I wanted to observe how the sound waves move in the water and how different noise spectrum colors would affect the growth. I wanted to put bacteria into a container of water. This water would be distilled and only contain the correct bacteria. I would then submerge the speaker and document the results. My main problem is I do not know how to gather results in an affordable way. How do I do this?