Gamma Spectrometry Forum

ImpulseQt v3.2.4.0 – Changelog (March 2026)
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• Update version number ✅
• Sound cards Filter + deduplicate device list ✅
• Fix spectrum plot to allow zooming on x axis ✅
• Added new function to tab 1 for paper theme ✅
• Loaded histogram now shows end date ✅


As always, please share your bug reports !

Steven Sesselmann


💻 Windows (10 - 11) Download from the Microsoft store: https://apps.microsoft.com/detail/9mxb6 ... n-US&gl=AU

🍏 Mac Download from GitHub: https://github.com/ssesselmann/ImpulseQt/releases

Notes to Update 3.2.4

This is the first update since the middle of January - I fixed a few small annoying issues reported by users and added a nice new theme which lends itself better to printed documents.

I attempted to fix a Windows bug where the sound card sowed up multiple times - please let me know if this improvement worked ☝️

I fixed the spectrum zoom function and it is now possible to zoom in on the x-axis without it immediately reverting to the default.
Note: There is a small [A] in the bottom left corner of the plot for Auto reset.

The date above the histogram (top right) now shows the date and time that the selected recording ended. ⏰

The most time consuming part of this update was the implementation of themes - the blue theme looks cool, but does not lend itself to printing. I added the paper theme option where plots are high contrast on white background, which works better when printing.

Enjoy using ImpulseQt