It's a good thing you can't hear most of those high frequencies, otherwise you'd be deaf. Have you tried sending voice ultrasonically using amplitude modulation? In one of my videos I show the tweeters on the Sony PSP playing 2 "audio" stations stacked atop each other in the frequency domain, and Dream drm-receiver playing them back at voice frequency. Once I get good at C programming I'll try to make an Ultrasonic text messenger using Olivia MFSK at 19 kHz.
It's a good thing you can't hear most of those high frequencies, otherwise you'd be deaf. Have you tried sending voice ultrasonically using amplitude modulation? In one of my videos I show the tweeters on the Sony PSP playing 2 "audio" stations stacked atop each other in the frequency domain, and Dream drm-receiver playing them back at voice frequency. Once I get good at C programming I'll try to make an Ultrasonic text messenger using Olivia MFSK at 19 kHz.
Amishman35 3 years ago