What kind of data modulation schemes might be suitable for sending data to/from a Bluetooth audio headset? e.g. What kind of data modulation would likely survive the audio compression schemes and ...
Yamaha InfoSound and ShopKick application use technologies that allow to transfer data using ultrasound. That is playing an inaudible signal (>18kHz) that can be picked up by modern mobile phones ...
I've been given a handful of wireless microphones that transmit in the 36 MHz band, but unfortunately no receiver was included and proper receivers for that wireless mikes seem to be crazy-expensive. ...