Physics - Why cant we hear very loud sounds like the big bang?

Mahesh Godavarti (last edited 5 years ago) (Expert, Founder @Qalaxia)

The Big Bang is not an explosion in the traditional sense that is accompanied by a loud sound.
The Big Bang happened billions of years ago. The effect of that can be seen in the presence of universal cosmic background radiation.
The traditional sound that we can hear would require a physical medium through which the sound can travel. Space in general is full of vacuum through which sound cannot travel.

Humans can hear frequencies between 20Hz and 20,000 Hz (http://www.dspguide.com/ch22/1.htm).