The MeldaProduction Analyzer is the best free VST Audio Spectrum Analyzer there is! It has a nice big and adjustable display with a clear graphical representation of the sound. You can enlarge sections for a better view and copy/ paste the image to a clipboard and compare the results in a different analyzer window. VST Plugin Analyser is a measurement tool for VST Plugins. It can be used by plugin developers for debugging and as a quality control tool, since it can work with virtually any sample rate and any VST Host settings. Furthermore several automated tests are included. The Gonio3 VST plugin by uk-music is an Audio Vector Oscilloscope (Goniometer), presenting a detailed picture of the stereo output of your audio signal. An Audio Vector Oscilloscope lets you check the mono compatibility of a recording by displaying how much of the audio signal that passes through the left and right channel, and how much is.

Description

Blue Cat's FreqAnalyst is a free spectrum analyzer plug-in that lets you monitor the spectral content of your audio signal in real time.

This plug-in has been designed to provide extreme smoothness and high resolution for both time and frequency: unlike most spectrum analyzers, Blue Cat's FreqAnalyst is able to display continuous variations even with a very high frequency resolution, thanks to its unique smooth interpolation algorithms.

Most aspects of the audio to frequency display conversion can be managed, which lets you total control over the monitoring. A special thresholding system has been developed to help you see the important parts of the spectrum easily. In case you need extra precision in a particular frequency range, you can zoom the display and check the part of the graph you are interested in.

This plug-in supports Blue Cat's skinning language, so that you can customize the user interface to your personal needs.

Features

Every DAW comes with at least one EQ/Equalization plugin However, just having one might not cut it, especially since every EQ plugin offers different features. In this list I’m going to list the best 10 Free Equalization plugins which should make a great addition to your arsenal. Let’s get straight into it 1. TDR Nova Best 12 Free EQ VST/AU Plugins that Sound Great! Visual Analyzer is a free audio spectrum analyzer software for Windows. This software lets you analyze real-time phase spectrum of audio signals given through input audio devices. To do so, it provides multiple options to adjust step size (in dB), specify value considered as 0 dB, frequency range, distortion, etc. Oscarizor – 2D/3D Multi Channel Spectrum Analyzer Audio Plug-In VST / AU & AAX / Free & Pro „Sugar Audio’s blindingly brilliant multichannel spectrum analyser has hit the market It’s as easy on the eyes as it is on the wallet.” – Computer Music Aug/2016, P.26.

Vst Audio Frequency Analyzer Freeware

• Mono and stereo real time spectrum analyzer.
• Total control over the audio to frequencies tranformation.
• Smart interpolation algorithm for extreme display smoothness.
• Zoomable display with multiple sizes.
• Custom absolute and relative thresholds.

Download

We dont host any software files here. The download button will take you to the Blue Cat Audio website where you can download the software direct.

Download FreqAnalyst From Blue Cat Audio Website

If you use Wavosaur for mastering / premastering, or signal analysis in a more general way, you need tools for audio analysis : spectrum analyzers, phase analyzers, sonogram.
Wavosaur comes with analyzers, you’ll find them in the ‘tools’ menu, along with oscilloscopes & statistics about the sound file (maximum sample peak, RMS power, average value..).

Free Vst Spectrum Analyzer

But you can also use VST plugins (for some people it can be more convenient).
We have searched deep deep inside deep deep down inside into the web, to find the best free VST plugins for audio analysis, here’s the selection:

1) Spectrum Analysis

1.1) Voxengo SPAN

This spectrum analyzer uses FFT to display the signal frequency in real time.
You can freeze the display, and use the mouse to shows dB values / Frequency value
Frequency is displayed in Hz and in musical note.
The Voxengo SPAN analyzer also displays statistics : RMS power, and it features a clipping detection.

More info and download @ http://www.voxengo.com/product/span/
It is worth mentioning these plugins too, freeware!

1.2) Mdsp SmartElectronix Fre(a)koscope

Very nice, with interesting options for the spectrum display : linear/logarithmic/semitones ..
Adjustable size for the FFT buffer. Had sometimes display problem with Wavosaur.
More info and download @ http://mdsp.smartelectronix.com/freakoscope/

1.3) BlueCat FreqAnalyst

Like the previous VST effect, this one can show spectrum of left / right channel or both, has a “hold peak” feature that is interesting, when dealing with EQ level in your mix.
More info & download @ http://www.bluecataudio.com/Products/Product_FreqAnalyst/

1.4) Seven phase Spectrum Analyzer

Frequency Analyzer Free

This one is freely resizable inside the host application (works in Wavosaur)
More info and download @ http://sevenphases.wordpress.com/spectrum-analyzer/

1.5) MultiInspector free

Download @ http://www.vertexdsp.com/downloads.html#MultiInspectorFree

2) Sonogram

2.1) ag-works sonogram sg-1

This free plugin displays a scrolling sonogram for frequency analysis.
You have the choice for the sonogram colors, and many options to tweak the sonogram displays
This is the only sonogram VST we have found for free ! Fortunaly it’s very good.
More info & download @ http://ag-works.net/plugins.sg1.htm

3) Goniometer

3.1) Flux Stereo Tool

When you need to visualize your stereo position, and the repartition in the field, this plugin is very useful. You can check for phase errors in your mixes.
download @ https://www.fluxhome.com/download

3.2) Gonio3

download @ http://www.uk-music.de/index.php?page=downloads

3.3) HOFA 4U Goniometer & Korrelator

download @ http://hofa-plugins.de/pages/start_en/4u_en.php

If you think that we have forget some free VST analyzer plugin in this list, do not hesitate to comment !

Edit:

We just have found this pretty nice analyzer somewhere on our harddisk :

Dust Analyzer:

It provides three modes : spectrum / scope / phase , with “hold peak” option, freeze option, dB/Freq display with mouse, linear / logarithmic scale

more info & download @ KvR audio forum & http://www.signaldust.com/