# Problem with doubling sound

**URL:** <https://qa.fmod.com/t/problem-with-doubling-sound/21967>\
**Category:** FMOD Studio\
**Tags:** unity\
**Created:** [August 2, 2024, 5:21pm UTC](https://qa.fmod.com/t/problem-with-doubling-sound/21967 "2024-08-02T17:21:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![NoName231213](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/noname231213/32/6956_2.png) [@NoName231213](https://qa.fmod.com/u/NoName231213)\
**Post date:** [August 2, 2024, 5:21pm UTC](https://qa.fmod.com/t/problem-with-doubling-sound/21967/1 "2024-08-02T17:21:07Z")

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Problem, how to fix sound doubling when smoothly switching sound (I do REV for the car) (Fade in, fade out)?

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<div class="post-metadata">

**Author:** ![li\_fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/li_fmod/32/6577_2.png) [@li\_fmod](https://qa.fmod.com/u/li_fmod)\
**Post date:** [August 9, 2024, 12:52am UTC](https://qa.fmod.com/t/problem-with-doubling-sound/21967/2 "2024-08-09T00:52:38Z")

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Hi,

Would it be possible to elaborate a bit on what specific event behavior you are aiming to achieve? Could I get a screenshot of how you set up the event in FMOD Studio?

You could use Transition regions and conditions [(FMOD Studio | 27. Glossary | 27.170 Transition Region)](https://www.fmod.com/docs/2.03/studio/glossary.html#transition-region) to smoothly switch sound.

Alternatively, you could have a look at a similar post here, for which I will share it here: [Sound plays double](https://qa.fmod.com/t/sound-plays-double/15902)

Hope it helps, let me know if you have any questions.