Voxengo SPAN Plus (64-bit) is a real-time 'fast Fourier transform' audio spectrum analyzer plug-in for professional music and audio production applications. SPAN Plus 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. Voxengo SPAN Plus (64-bit) is an extended version of the freeware SPAN plug-in: SPAN Plus provides several additional features such as PNG file export, real-time spectrum import/export and static spectrums display.