How to pronounce “subside”(noun) in English

Blanche walks out onto the stage, as formal as some courtier, and a storm of applause rises when the lights flare up.Blanche averts her face from them until the cheering subsides.She makes a rapid scan of the whole room.

And the change has been extraordinary to the point that now we have effective treatments for most things.And this doesn't just go away like you bump your knee and after a few days the pain subsides.