Tumult (noun) – disorderly agitation or milling about of a crowd usually with uproar and confusion of voices.

Source: https://www.merriam-webster.com/dictionary/tumult

From “The Complete Fiction of Nella Larson” by Nella Larsen, “Quicksand” Chapter 20 Page 142

“About her the tumult and the shouting continued, but in a lesser degree.”

The word tumult is used to describe how the disturbing loud commotion gradually became lower.