The loudspeaker on your home entertainment equipment ... surroundings reflect the sound to you wherever you are. Making a directional speaker to project sound over a long distance is considerably ...

The loudspeaker on your home entertainment equipment ... surroundings reflect the sound to you wherever you are. Making a directional speaker to project sound over a long distance is considerably ...

which are extremely directional but are beyond human hearing. Whereas a typical loudspeaker pushes air, parametric speakers generate an audible signal by modulating the air outside of the speaker ...