Spectrum can be smoothed out visually for an easier examination. Beside that you can choose to display secondary spectrum of a desired type (e.g.
You may specify Fourier block size in samples, FFT window overlap percentage, spectrum's visual slope.
SPAN provides you with a very flexible “mode” system which you can use to setup your spectrum analyzer preferences. SPAN is a free real-time “fast Fourier transform” audio spectrum analyzer AAX, AudioUnit, and VST plugin for professional sound and music production applications. RMS, true peak level, and clipping detector.
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