Allowing you to compare the spectral analysis of several tracks at once, the FreqAnalyst Multi Spectral Analysis Tool Plug-In from Blue Cat Audio gives you the ability to see which parts of the spectrum individual instruments in your mix use. Its Diff view allows you to compare the spectrum of several instances, which can be used for EQ matching or curve response management.
The plug-in's precision and rate can be managed by applying an offset or slope to the measured spectrum, while 3 performance modes give you the choice between instant, peak, or average response, depending on your needs. The spectrogram itself can be set to 2D or 3D operation, with the later providing a waterfall mode in display. The display for all modes support zooming, allowing you to hone in on exact areas for critical analysis. The inclusion of 4 memory slots allows you to compare multiple tracks. The plug-in is available in VST, AU, RTAS, AAX, and DirectX formats on Mac and Windows.