Question

What is the difference between omni directional & unidirectional wave?

Answer 1

Omni directional wave:

Omni directional in which wave travel in different direction. On the other hand, we can say also that waves go in all directions like a circle.so omnidirectional devices broadcast and receive their singles from all the direction.

unidirectional waves:

 unidirectional in which wave travel in one direction. Unidirectional devices only work in one direction, and work best in limited portion of the directions. This lets them direct signal more efficiently, but only in the one direction so that has to be pointed.

Answer 2

Omnidirectional devices communicate or get their signs from all directions. Somebody who records sound impacts and needs a general perusing of an encompassing domain (like timber squeaking, rivulets prattling, and crickets tweeting in a backwoods, for instance) would locate an omnidirectional microphone.

Cell phone antennas will (in principle, in any case — changing in unwavering quality relying upon carrier and scope) get signals from wherever around the gadget.

Unidirectional devices, then again, are more centered around getting or transmitting their signs in a single course. This is particularly useful in case you're in a region immersed with surrounding signals that you need to maintain a strategic distance from.

Having a microphone that will give you and your subject full focus while overlooking the encompassing commotion and prattle is a profitable method for controlling the circumstance.