Howtosignalprocessing
Do directional speakers exist?
Directional speaker technology has been around for quite a few years, but it was originally used only in laboratories where expensive equipment was required to produce ultrasonic sound in a usable way.
Where does sound get amplified?
The bones in the middle ear amplify, or increase, the sound vibrations and send them to the cochlea, a snail-shaped structure filled with fluid, in the inner ear.
How does directional sound work?
Summary of how directional speakers work
When the two waves hit something (or someone), they slow down and demodulate, producing a new wave (green) whose frequency is much lower—equal to the difference in frequencies between the two original waves. This is a wave you can hear.
