ALEXANDRIA, Va., June 18 -- United States Patent no. 12,328,408, issued on June 10.
"Voice conversation apparatus" was invented by Katsunori Suetsugu (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A voice conversation apparatus includes a microphone configured to convert a voice of the one speaking person into a voice signal, modulation means configured to modulate the voice signal into a signal using ultrasound as a carrier wave, sound wave emission means configured to emit the signal modulated by the modulation means as a sound wave using ultrasound as a carrier wave, alignment means used by the one speaking person to make alignment so that the sound wave emission means is oriented to another voice ...