# How do I add a low pass filter to my song in Unity?

**URL:** <https://qa.fmod.com/t/how-do-i-add-a-low-pass-filter-to-my-song-in-unity/14041>\
**Category:** Unity\
**Created:** [August 11, 2018, 6:25am UTC](https://qa.fmod.com/t/how-do-i-add-a-low-pass-filter-to-my-song-in-unity/14041 "2018-08-11T06:25:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Shadoninja](https://avatars.discourse-cdn.com/v4/letter/s/71e660/32.png) [@Shadoninja](https://qa.fmod.com/u/Shadoninja)\
**Post date:** [August 11, 2018, 6:25am UTC](https://qa.fmod.com/t/how-do-i-add-a-low-pass-filter-to-my-song-in-unity/14041/1 "2018-08-11T06:25:26Z")

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All I want to do is programatically add/remove a low pass filter to my song in my game. How do I do this?

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**Author:** ![jojojo](https://avatars.discourse-cdn.com/v4/letter/j/96bed5/32.png) [@jojojo](https://qa.fmod.com/u/jojojo)\
**Post date:** [August 12, 2018, 11:05am UTC](https://qa.fmod.com/t/how-do-i-add-a-low-pass-filter-to-my-song-in-unity/14041/2 "2018-08-12T11:05:19Z")

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Through a parameter and a filter automation on that parameter. So when the parameter-value increases, the filter frequency does too.

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**Author:** ![Shadoninja](https://avatars.discourse-cdn.com/v4/letter/s/71e660/32.png) [@Shadoninja](https://qa.fmod.com/u/Shadoninja)\
**Post date:** [August 12, 2018, 7:32pm UTC](https://qa.fmod.com/t/how-do-i-add-a-low-pass-filter-to-my-song-in-unity/14041/3 "2018-08-12T19:32:29Z")

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> [@](#):
>
> Through a parameter and a filter automation on that parameter. So when the parameter-value increases, the filter frequency does too.

Thanks. I finally figured it all out. FMOD is super daunting when you first look at it, but then it becomes a pretty invaluable audio tool. What a great weekend I just got to have 🙂