Voxengo has released an update to the SPAN free real-time “fast Fourier transform” audio spectrum analyzer plugin for Windows and Mac.
Version 3.12 adds a “Panel border” palette modifier, and all palettes have been updated to reduce “border” contrast. An existing palette may need to be reloaded for the change to be visible. Additionally ,the spectrum window’s sliders have been modified to look less contrasted.
SPAN provides you with a very flexible “mode” system which you can use to setup your spectrum analyzer preferences. You may specify Fourier block size in samples, FFT window overlap percentage, spectrum’s visual slope. Beside that you can choose to display secondary spectrum of a desired type (e.g. real-time maximum, all-time maximum). Spectrum can be smoothed out visually for an easier examination.