Yes if you checked the last paragraph, I did mention I'll be writing follow ups to this one which includes both a simple frequency clipping approach and a Machine Learning based approach. Having one cluttured article would lose the reader's interest in no time, atleast in my opinion.

While the specific noise reduction algorithm we use is a trade secret, I'd still try my best to go over the best-known approaches for tackling this issue right now and how to handle them in javascript