Here is another free video tutorial from Oscar nominated Marcelo Cryo. In this tutorial Marcelo takes a look at how to use reverb on ambience track in audio post production to create space. Over to you Marcelo....

In a movie we recreate most of the sounds, the only thing that we keep unless ADR is required is the direct sound - the voices, from the film set.

Ambiences are very important and there are 2 techniques that I like to use to create and make it believable and work for a scene and I find that reverbs is very important to help this.

The first one is use reverbs to give depth to the ambience, which I find especially effective on ambience tracks with birds, animals, etc! This is also a very good way to mix layered ambiences without masking the others effects.

The second technique is use reverb to process the ambience to fit on the scene, perhaps using a convolution reverb and use a programme that closely makes the room used in the scene, to get the right sound of the room, when you don't have a way to record the actual room used. However it is possible with some convolution reverbs to create a impulse response with the slate claps, which can help you get an even more genuine sound for the room what was used in the scene.