Directional speaker system
The sound is projected just like light. It’s intensely focused to a certain space, only within the audio beam can hear the sound, and just a step away from audio beam you cannot hear any sound.
The sound can travel long range without dispersing like laser or light. It’s useful for outdoor advertisement, military communication use, keeping police line on demonstration, etc.
Features
1) Sound projection angle can be adjusted.
2) Equalizing of Frequency response depend on usage.
3) Sound Reaching Distance is Controllable
4) Dynamic Modulation algorithm...