How to pronounce “khz” in English

but when you project images into the air, the image becomes indistinguishable from matter, right? Or for example, with sound, if youraise the resolution to about 40 kHz, it becomes possible to use synthesis to make things float or create shapes, even though it's inaudible to the ear and has the characteristics of sound waves. That's the kind of thing I'mresearching. In other words, I'm researching