# Nan with fluid.hpss~

**URL:** <https://discourse.flucoma.org/t/nan-with-fluid-hpss/175>\
**Category:** Bug Reports and Issues\
**Created:** [April 9, 2019, 5:45pm UTC](https://discourse.flucoma.org/t/nan-with-fluid-hpss/175 "2019-04-09T17:45:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![pasquetje](https://discourse.flucoma.org/user_avatar/discourse.flucoma.org/pasquetje/32/16_2.png) [@pasquetje](https://discourse.flucoma.org/u/pasquetje)\
**Post date:** [April 9, 2019, 5:45pm UTC](https://discourse.flucoma.org/t/nan-with-fluid-hpss/175/1 "2019-04-09T17:45:51Z")

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Hello !

I very often get intermittent NaNs from the percussive part outlet. With simple params such as:  
Masking: Mode Classic  
harmfilter: 23  
perfecfiltersize: 25  
fftsettings: 1024 -1 2048

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**Author:** ![tremblap](https://discourse.flucoma.org/user_avatar/discourse.flucoma.org/tremblap/32/5_2.png) [@tremblap](https://discourse.flucoma.org/u/tremblap)\
**Post date:** [April 9, 2019, 7:02pm UTC](https://discourse.flucoma.org/t/nan-with-fluid-hpss/175/2 "2019-04-09T19:02:17Z")

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what kind of signal do you put in? does it make the same thing with the same signal in a buf.hpss ?

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**Author:** ![tremblap](https://discourse.flucoma.org/user_avatar/discourse.flucoma.org/tremblap/32/5_2.png) [@tremblap](https://discourse.flucoma.org/u/tremblap)\
**Post date:** [April 12, 2019, 11:15am UTC](https://discourse.flucoma.org/t/nan-with-fluid-hpss/175/3 "2019-04-12T11:15:08Z")

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I found ways of reproducing - it is a variation of the known bug we mention in the release log. We’re on it.