http://www.independentrecording.net/irn ... isplay.htm The full frequency ranges generated by 28 different instruments grouped into 5 instrument categories. A frequency-aligned overlay of an extended-range piano keyboard, with the note and octave for each key labeled. The frequency domains for sonic characteristics such as “rumble”, “warmth”, “sibilance”, etc. Location of the 31-bands in a standard ISO-defined 1/3rd-octave graphic equalizer. A color-coded breakdown of the full audio frequency spectrum into 5 ranges from sub-bass to the high-frequencies. Color-coded “data boxes” for each frequency range containing specific ranges and characteristics.