Method and system for simplifying speech waveforms (Patent)

TODO: Reread the patent because people are saying this describes an equivalent to the original which uses ultrasound instead of high voltage radio.

Converts analogue signal of speech to square waves. The amplitude of the square wave remains constant. Changes in the signal are represented by flipping the signal between +1 and -1.

• 6db per octave
• 0 to 15k cycles
• Band-pass filters lower than 3k cycles/second significantly distort human speech

optimum results have been achieved by using a filter having a 12 decibel per octave slope from 0 to 15,000 cycles per second

Multiplexing speech signals within a transmission by strategically spacing out the flips or amplitudes of the signal.