KVR Audio

effree · Post by **effree** » Tue Dec 30, 2025 2:55 am

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Hi All,
I'm still early in development but i've built a free real-time audio spectrogram that functions on Mac and Windows. It has 35 colormaps, a stereoscope windows which is dockable/snappable to the main window. It has Enhanced Low-end clarity and a ton of other settings and features. Check it out, and i hope you all enjoy.

Post any questions!

https://emspec.app (https://emspec.app)

pekbro · Post by **pekbro** » Tue Dec 30, 2025 7:13 pm

Pretty neat! Not overly useful for me without a vst version though unfortunately. YMMV.

Didn’t try the m4l version yet tho, will give that a go.

legendCNCD · Post by **legendCNCD** » Wed Dec 31, 2025 10:35 am

Yep, vst3 x64 is needed.

effree · Post by **effree** » Sat Feb 21, 2026 4:17 pm

pekbro wrote: Tue Dec 30, 2025 7:13 pm Pretty neat! Not overly useful for me without a vst version though unfortunately. YMMV.

Didn’t try the m4l version yet tho, will give that a go.

The Mac for Live device just launches the app and auto hides when the info box isn't available so you can place it in that region and put of the way.

Vst version will be built eventually.

But for now the latest version has a vst audio bridge which sends audio to the device. For users who have ASIO. Also the vst sends better quality audio than your desktop loopback device.

effree · Post by **effree** » Sat Feb 21, 2026 4:20 pm

legendCNCD wrote: Wed Dec 31, 2025 10:35 am Yep, vst3 x64 is needed.

I will be working on that eventually. The latest version for have a vst that sends audio to the plugin. I was thinking of adding a feature that the vst auto launches the app though so if it is added to a track or in a saved project it would launch.

Let me know what you think of that in the meantime. Vst will take a long time for me to learn and develop. The backend is already c++ but I don't know juce vst development well enough yet to built the interface and I have other plans in the meantime before I venture down that route.

martar1994 · Post by **martar1994** » Wed Feb 25, 2026 6:31 am

I love your design!

wadamek · Post by **wadamek** » Tue Mar 10, 2026 11:19 am

Looks really nice! Mind if I ask what technologies did you use to build this?

cjmars · Post by **cjmars** » Sun Mar 22, 2026 7:24 am

Super! Well done!

sQeetz · Post by **sQeetz** » Sun Mar 22, 2026 9:03 am

Link gets to the page, but when trying to download it 404s

Free Real-time Audio Spectrogram for Mac and Windows