- #1
chinalinbin
- 1
- 0
Human's throat sends the sound (person's hidden sound wave) namely reads silently the sound person's hidden sound wave's record and playbacking record the hidden sound wave with mic (1) to be possible the body carrying lightweight power supply sound recording and playbacking (small box) (2) handset record and playbacking (increase hidden sound wave sound recording and broadcast procedure) may also intercept others' words namely hidden sound wave sound hidden sound wave characteristic at heart: Sends out from myself hears not to hear to others is closes the mouth then the sound wave which sends through the throat