A Reverse Reverb is created by reversing a reverb tail so that its volume rises gradually and moves to occur before an instrument kicks in. Simply put, when you put a reverb on a sound or audio signal, render out the whole audio and then reverse it, it is known as a reverse reverb. Typically, reverse reverbs are used to make lush whooshing noises. Certain DAWs have built-in plugins that can apply a reverse Reverb. Logic Pro X, for example, has a plugin called space designer that can seamlessly reverse any impulse reverb.