The key development made by xMEMS is the company’s ultrasonic amplitude modulation transduction. The speaker can generate ultrasonic sound pulses which are then pushed to a demodulator to transform the sound pulses into audible sound for the user.

how does this ‘demodulator’ work? can someone ELI5?

my wild/ignorant guesses --> is this some sort of an ‘acoustic collimator’ or some mechanism that makes coherent soundwaves for amplification or something? do these devices exist? how do they work?