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 FreqAnalyst by Blue Cat Audio is a Virtual Effect Audio Plugin. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin, a DirectX Plugin, an RTAS Plugin and an AAX Plugin.
Blue Cat's FreqAnalyst
Product FreqAnalyst
Developer Blue Cat Audio
Price (MSRP)
Type / Tags Analyser / MonitorUtility
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
Downloads Released
Downloads Released
Miscellaneous Information
Copy ProtectionNone

Blue Cat's FreqAnalyst is a real-time spectrum analyzer with smooth response and complete control over the audio spectrum analysis. Its customizable user interface and transparency feature let you make it totally integrated in your favorite audio application: check the audio spectrum and see behind it.

It is available as a single download or within the Freeware Pack bundle, together with all Blue Cat Audio freeware products.


  • Mono and stereo real time spectrum analyzer.
  • Total control over the audio to frequencies transformation.
  • Smart interpolation algorithm for extreme display smoothness.
  • Zoomable display.
  • The user interface can be made transparent.
  • Custom absolute and relative threshold.
  • Skinnable user interface.
  • Full automation and real time MIDI control support.
Latest User Reviews Average user rating of 4.00 from 1 review

Reviewed By Sycopation
October 21, 2015

Excellent, free product. I use it a lot, so it's actually important to me that it's visually attractive, which it definitely is. Being able to see left and right channel independently is great.

My only realistic complaint is that it is more CPU-intensive than I would like. Not terrible, but high enough that I often shut if off when not in use, and my computer is above average in power.

My less realistic complaint is that I'm bummed it can only do one channel at a time. Yeah, I know, they have the MultiFreq product that I can buy. But c'mon, how about just TWO channels? That still leaves something to be desired for people that realize they really need/want 4 or more, but still gives us cheapskates a great, more useful, free product that might eventually entice us to upgrade to the paid vesion. As it is now, most people have only ever used a single channel analyzer, so they don't know what they're missing. If you don't show them the power of multi-channel analysis, they'll continue to not see the point in MultiFreq, and they won't shell out the money for it.

Just sayin'

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Average user rating of 4.00 from 1 review

Blue Cat Audio
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