Sound Quality Analyzer conducts Modulation Analysis on audio WAV files
Modulation (%) – The degree of modulation is determined in each of 47 overlapping critical bands. Apparent modulations due to broadband noise are identified by their band-to-band correlation and suppressed. An overall modulation value is obtained by weighting the band results according to empirically determined psychoacoustic sensitivity functions considering level, carrier frequency, modulation frequency, and correlation, then summing them together. See Nelson “Filling the Modulation Gap” Noise Con 2014.