Fade in radio

Hello

Anybody know how to get the effect that the sounds sort of increases, very common in cinema. Like in this clip from GI Jane.


Thank you

Easy, apply the Compressor with the megaphone or telephone preset.
When you want the effect to fade away, keyframe the Mix parameter. 0% is the pure original sound, 100% is pure effected sound. So keyframe that to make the am transistor radio effect go away.

To make it louder, keyframe the Volume.

Very simple.

Orrrrrr... Dupe soundtrack. Top track has effect. Bottom track clean. Fade out audio on effect track leaving the clean track to do its thing.