# Instrument sound makes weird note with LP filter fully open if played in a particular sequence

**URL:** <https://backstage.polyend.com/t/instrument-sound-makes-weird-note-with-lp-filter-fully-open-if-played-in-a-particular-sequence/11976>\
**Category:** Beta Bug\
**Tags:** mini, tracker, pattern-fx, logged\
**Created:** [June 10, 2024, 4:22pm UTC](https://backstage.polyend.com/t/instrument-sound-makes-weird-note-with-lp-filter-fully-open-if-played-in-a-particular-sequence/11976 "2024-06-10T16:22:42Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Sineway](https://backstage.polyend.com/user_avatar/backstage.polyend.com/sineway/32/3191_2.png) [@Sineway](https://backstage.polyend.com/u/Sineway)\
**Post date:** [June 10, 2024, 4:22pm UTC](https://backstage.polyend.com/t/instrument-sound-makes-weird-note-with-lp-filter-fully-open-if-played-in-a-particular-sequence/11976/1 "2024-06-10T16:22:42Z")

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### Bug Description

The bass instrument of the attached makes weird note with LP filter fully open if played in a particular sequence.

### Reproduction Steps

1. Load the attached project. Go to Song mode and scroll down to pattern 30 and press play. This is how the bass is _supposed_ to sound.
2. Stop playback and scroll up to pattern 27 (the one just before 30) and press play and listen all the way through pattern 30.

Now the bass makes a fully open filter sound twice before playing how it’s supposed to again.

### Occurrence

Always.

### Found in

- **Version** : 2.0.0
- **Build** : 934

### Attachments

I’ve stripped out everything unnecessary in the project so it’s as small as possible.

[bug-clean.zip](https://backstage.polyend.com/uploads/short-url/6Ddcvo5TsIQ2tGqscSMyYeVu7ca.zip) (1002.6 KB)

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**Author:** ![borsuk](https://backstage.polyend.com/user_avatar/backstage.polyend.com/borsuk/32/582_2.png) [@borsuk](https://backstage.polyend.com/u/borsuk)\
**Post date:** [June 12, 2024, 2:45pm UTC](https://backstage.polyend.com/t/instrument-sound-makes-weird-note-with-lp-filter-fully-open-if-played-in-a-particular-sequence/11976/5 "2024-06-12T14:45:26Z")

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Hi @Sineway Thank you for reporting this bug. We are sorry you’re experiencing issues while using our product. We will do our best to resolve it and notify you when it’s ready.

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<div class="post-metadata">

**Author:** ![Sineway](https://backstage.polyend.com/user_avatar/backstage.polyend.com/sineway/32/3191_2.png) [@Sineway](https://backstage.polyend.com/u/Sineway)\
**Post date:** [June 12, 2024, 3:12pm UTC](https://backstage.polyend.com/t/instrument-sound-makes-weird-note-with-lp-filter-fully-open-if-played-in-a-particular-sequence/11976/7 "2024-06-12T15:12:06Z")

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Reporting and contributing to the quality of your product is part of the fun. 😊