Sub-bass sounds are the deep, low-register pitches below approximately 60 Hz and extending downward to include the lowest frequency humans can hear, approximately 20 Hz. In this range, human hearing is less sensitive, so these notes tend to be felt more than heard.

What is a sub music?

A subwoofer (or sub) is a loudspeaker designed to reproduce low-pitched audio frequencies known as bass and sub-bass, lower in frequency than those which can be (optimally) generated by a woofer.

Can you hear SubBass?

For those who aren't familiar, sub-bass are low-pitched notes below approximately 60 Hz, and often go below the lowest frequencies that humans can actually hear. In other words, you often can't hear sub-bass; rather, you feel it.