Voxengo SPAN 2.0 – a freeware real-time “fast Fourier transform” audio spectrum analyzer plug-in for professional music and audio production applications – is now available for download. The following features were added in SPAN version 2 since version 1: Multi-channel analysis Mid/side analysis Correlation meter Multi-platform support Undo/redo Preset manager User interface coloration User interface… Read More Free FFT Spectrum Analyzer For Mac & PC