I read that there is in the net and article Patrushev In healthy skin - healthy hearing.
Understand from this that:
1. Neurophone there is no electric connection with the person.
2. the audio signal is modeled at the ultrasound frequency 40kHz (which really should be constantly changing depending on the resistance of the skin) and goes to the ultrasound transducers, which are imposed on the skin?
Could it be this simple?
however,
so discrete-time signals and modulation Aplicada different things. And it says about phase shift..the Key to understanding the work of Neurophone lies in the stimulation of nerve endings of the skin discrete coded signals, which, according to the holographic model of the brain, have such phase relationships that are recognized by any nerve in the body, like sounds.
And why such a high voltage need not understand?Emitters one of the first models of Neurophone was very similar to the apparatus for ultratonotherapy proposed in the 60-ies of the inventor D. Sinicki. The same discharge electrodes with a voltage - 3000 Volts
I represent a block diagram like this:
[Low signal] --> [AM modulator] --> [speakers attached to the skin]