Frequency range of hearing of the human ear is 20 Hertz – 20,000 Hertz. This is what defines the bass, mids and treble. These three make up the frequency spectrum of the human ear. Three main frequency bands in the frequency spectrum are- Lows – Anything below 300 Hertz Mids – 300 – 900 Hertz Highs – 900 Hertz – 20,000 Hertz Further divided frequency bands- LOW- Lowes – 20 Hertz – 150 Hertz Low Mids – 150 Hertz – 300 Hertz MIDS- Mids – 300 Hertz – 750 Hertz High Mids – 750 Hertz – 4,000 Hertz Lows are frequencies that you can feel, highs are annoying sounds to your ear and mids make it sound hollow or boxy. Lows have a lesser frequency band, highs have a wider frequency bands.