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[GH-ISSUE #67] Audible aliasing with kWoodRoom when filter is above 0.5 #55

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opened 2026-05-05 22:03:46 -06:00 by gitea-mirror · 1 comment
gitea-mirror commented 2026-05-05 22:03:46 -06:00
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Originally created by @xard-dev on GitHub (Feb 19, 2026).
Original GitHub issue: https://github.com/airwindows/airwindows/issues/67

Version information

System Info: : Linux VST3 on AMD Ryzen 9 5900X 12-Core Processor, 31 GB RAM
Host: : Ardour @ 96000 Hz
OS: Fedora 43

Description

In kWoodRoom there is audible aliasing when having filter above 0.5 value.

For example with filter value 0.43 there is no audible aliasing in the full wet signal:
Image

Raising the filter value to 0.54 creates a very audible aliasing peaks over 2.5 Khz range and above :
Image

Increasing the filter value will shift the aliasing peaks higher.

Originally created by @xard-dev on GitHub (Feb 19, 2026). Original GitHub issue: https://github.com/airwindows/airwindows/issues/67 ### Version information System Info: : Linux VST3 on AMD Ryzen 9 5900X 12-Core Processor, 31 GB RAM Host: : Ardour @ 96000 Hz OS: Fedora 43 ### Description In kWoodRoom there is audible aliasing when having filter above 0.5 value. For example with filter value 0.43 there is no audible aliasing in the full wet signal: <img width="1137" height="716" alt="Image" src="https://github.com/user-attachments/assets/2579b9b2-fcba-4868-8617-80fa003bf88a" /> Raising the filter value to 0.54 creates a very audible aliasing peaks over 2.5 Khz range and above : <img width="1137" height="716" alt="Image" src="https://github.com/user-attachments/assets/c2b81e18-776c-4731-a6d7-b13c59e3bcb7" /> Increasing the filter value will shift the aliasing peaks higher.
gitea-mirror commented 2026-05-05 22:03:50 -06:00
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@xard-dev commented on GitHub (Mar 7, 2026):

According to Chris this is intended behavior as the filter values over 0.5 are considered "experimental territory".

<!-- gh-comment-id:4016557294 --> @xard-dev commented on GitHub (Mar 7, 2026): According to Chris this is intended behavior as the filter values over 0.5 are considered "experimental territory".
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