# How to achieve a transition effect from the outside of a wall to the inside
**URL:** https://qa.fmod.com/t/how-to-achieve-a-transition-effect-from-the-outside-of-a-wall-to-the-inside/17733
**Category:** FMOD Studio
**Created:** [September 28, 2021, 10:12pm UTC](https://qa.fmod.com/t/how-to-achieve-a-transition-effect-from-the-outside-of-a-wall-to-the-inside/17733 "2021-09-28T22:12:03Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@VioMau](https://qa.fmod.com/u/VioMau)
#### Post date: [September 28, 2021, 10:12pm UTC](https://qa.fmod.com/t/how-to-achieve-a-transition-effect-from-the-outside-of-a-wall-to-the-inside/17733/1 "2021-09-28T22:12:03Z")
I need heard a band from outside a room and then from inside. Listen to the band as if you were about to enter a pub and then enter to the pub to hear the music clearly. With snapshots? With Eq? Thanks and sorry my english. I make the inverse procees with EQ and Snapshots, but is not allright because when I enter the room it sounds as if I was about to enter.
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### Author:  [@richard\_simms](https://qa.fmod.com/u/richard_simms)
#### Post date: [September 29, 2021, 6:05am UTC](https://qa.fmod.com/t/how-to-achieve-a-transition-effect-from-the-outside-of-a-wall-to-the-inside/17733/2 "2021-09-29T06:05:32Z")
You can use a few different methods. The most common one would be to use snapshots to detect if you are inside or outside the pub. When outside the pub, you can apply a lowpass filter and some room reverb (pre-spatializer). When inside, these effects no longer apply.
You can also look into occlusion. Some integrations like the Unreal Engine integration have a built in occlusion support, or you can add it yourself manually.
[https://fmod.com/resources/documentation-ue4?version=2.02&page=user-guide.html#occlusion](https://fmod.com/resources/documentation-ue4?version=2.02&page=user-guide.html#occlusion)