This is a neat idea, since cold brew has a common criticism of an oxidized flavor due to its long steep time. A shorter steep could get you the smooth flavor without the oxidation
Wouldn't it be cheaper to brew the coffee in a sealed/vacuum chamber instead? Whatever machine they're using to generate "acoustic cavitation" doesn't sound cheap.
You can also sous vide coldbrew coffee for faster results than traditional coldbrew. But at that point is it still technically coldbrew? Maybe warmbrew is a better term for it.
