IMHO phased arrays like this are too bulky and expensive, what you need for this to go mainstream is a Spatial Ultrasound Modulator like this https://www.natur

IMHO phased arrays like this are too bulky and expensive, what you need for this to go mainstream is a Spatial Ultrasound Modulator like this https://www.nature.com/articles/s41467-020-18347-2 https://www.nature.com/articles/s41467-020-18347-2 There are also MEMS piston based devices that could also work