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.).
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:
14 thoughts on “ Best free VST plugins for analyzing audio ” Pingback: Hearing Test, what’s your hearing range Blogosaur Mark L 19 June 2014 at 17 h 58 min. I’m looking for a plugin to analyze speech patterns. So I have a podcast, and I get a different file for each speaker. My name is Christian-W. Budde and this is my personal website. Here you will find everything about me and my work. My Education. I have studied electrical and information engineering at the RWTH Aachen. My academic degree is Diplom-Ingenieur, which is equal to a master degree.
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
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
2.1) 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
3.1) 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 !
We just have found this pretty nice analyzer somewhere on our harddisk : /virtual-cooking-games-free-download.html.
Dust Analyzer:
It provides three modes : spectrum / scope / phase , with “hold peak” option, freeze option, dB/Freq display with mouse, linear / logarithmic scale
/what-should-your-humanize-be-on-auto-tune-evo-vst.html. more info & download @ KvR audio forum & http://www.signaldust.com/
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.
A simple interface makes it easy to use for anyone. Predefined measurements allow to measure the impulse response and thus the magnitude and phase response of any VST effect plugin. Different excitation signals also allow to get an overview how non-linearities affect the impulse response. For further nonlinear investigations, a dedicated waveshaper measurement is available. Beside that, a complete suite of unique measurements for dynamics (compressor/limiters) is available.
The measurement results can be saved in several formats. Impulse responses, can be saved as WAV or CSV (for import in to Excel). All plots can be stored as Bitmap/PNG or SVG (only available on request). Furthermore it is possible to copy the measured data to MATLAB for further processing.
Specifications: