Voxengo SPAN

Voxengo SPAN

Free
A real-time “fast Fourier transform” audio spectrum analyzer
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SPAN is a free real-time “fast Fourier transform” audio spectrum analyzer AU, AAX and VST plugin for professional music and audio production applications. It provides you with a very flexible “mode” system which you can use to set up your spectrum analyzer preferences. You may specify Fourier block size in samples, the FFT window overlap percentage, and the spectrum's visual slope.

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