Wavy walls use fewer bricks than a straight wall (2020)

I'd expect those walls to disperse and muffle sound as opposed to a flat wall, which would echo and reinforce parts and make a space noisier. The curves should make for more of a white noise effect.

the linked post https://www.johndcook.com/blog/2019/11/19/crinkle-crankle-ca... is worth the click too.