How to add an airplane engine sound with respect to its speed in Unity

In this video I will show you step by step how to add an airplane engine and propeller sound and how to play it according to the airplane speed. Basically to achieve that you will need to know how to play around with audio pitch of Audio Source component in Unity. It is very easy, just check it out and you will be able to make your own audio pitch controller for your games. Previously I’ve made a tutorial similar to this in this link but people are complaining that it has no voice and not too clear. So that was the reason I made this newer tutorial.