# Fourier Transform Curve Filter Not Working

**URL:** <https://forums.unrealengine.com/t/fourier-transform-curve-filter-not-working/1649479>\
**Category:** Issues and Bug Reporting\
**Tags:** question, metahuman\
**Created:** [January 28, 2024, 4:33pm UTC](https://forums.unrealengine.com/t/fourier-transform-curve-filter-not-working/1649479 "2024-01-28T16:33:41Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![lociobello](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lociobello/32/1164871_2.png) [@lociobello](https://forums.unrealengine.com/u/lociobello)\
**Post date:** [January 28, 2024, 4:33pm UTC](https://forums.unrealengine.com/t/fourier-transform-curve-filter-not-working/1649479/1 "2024-01-28T16:33:41Z")

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I want to clean up some mocap keyframes of a metahuman facial animation using the fourier transform curve filter in the sequencer curves editor, but every time I apply it (no matter the settings i choose) it just flattens the keyframe curves.  
Does anyone know what could eb the issue here?

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**Author:** ![Max.Chen](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/max.chen/32/1194502_2.png) [@Max.Chen](https://forums.unrealengine.com/u/Max.Chen)\
**Post date:** [February 2, 2024, 5:23pm UTC](https://forums.unrealengine.com/t/fourier-transform-curve-filter-not-working/1649479/2 "2024-02-02T17:23:24Z")

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Apologies for this. It is actually broken in 5.3 like you’re indicating. It has been fixed for 5.4 though.

Here’s the ticket for tracking purposes (although it’s not public at the time of this posting, it will be shortly): [Unreal Engine Issues and Bug Tracker (UE-196032)](https://issues.unrealengine.com/issue/UE-196032)

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<div class="post-metadata">

**Author:** ![lociobello](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/lociobello/32/1164871_2.png) [@lociobello](https://forums.unrealengine.com/u/lociobello)\
**Post date:** [February 3, 2024, 4:48pm UTC](https://forums.unrealengine.com/t/fourier-transform-curve-filter-not-working/1649479/3 "2024-02-03T16:48:10Z")

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Thanks for the info. Is there a release date for 5.4?

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**Author:** ![Baalvon](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/baalvon/32/1112116_2.png) [@Baalvon](https://forums.unrealengine.com/u/Baalvon)\
**Post date:** [March 16, 2024, 11:07am UTC](https://forums.unrealengine.com/t/fourier-transform-curve-filter-not-working/1649479/4 "2024-03-16T11:07:35Z")

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Same issue, I’m glad it’s a known bug and will be fixed. Thanks Epic.

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**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [January 6, 2025, 9:13am UTC](https://forums.unrealengine.com/t/fourier-transform-curve-filter-not-working/1649479/5 "2025-01-06T09:13:57Z")

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