SPAN is a free spectrum analyzer that will help you visualize the frequency spectrum in your audio track. SPAN is used to give additional information about an audio signal and help engineers make better decisions during the mixing and mastering process.
100% free now and always
Works with any DAW
Windows (32- and 64-bit Windows XP, Vista, 7, 8, 10 and later version, if not announced as unsupported)
macOS (10.11 and later version, if not announced as unsupported) computers (2.5 GHz dual-core or faster processor with at least 4 GB of system RAM required)