Frequency Range Reference

I have been asked several times now for what my definition of Lower-mids or lower-treble is, so I decided to put this on the site for reference.

Here are the ranges I use and the term I use to denote a particular range:

Sub-Bass = 10 Hz to 100 Hz
Mid Bass = 100 Hz to 300 Hz
Lower Mids = 300 Hz to 600 Hz
True Midrange = 600 Hz to 1.2 kHz
Upper Mids = 1.2 kHz to 2.4 kHz
Lower Treble = 2.4 kHz to 4.8 kHz
True Treble = 4.8 kHz to 9.6 kHz
Upper Treble = 9.6 kHz to 20 kHz