I got into figuring out decibels, and loudness measurements, and found the number 194dB as the boundary at which a sound starts distoring itself, namely creating vacuums which supposedly turn into shockwaves.
I know shockwaves are created around bodies that travel faster than the speed of propagation of sound in a chosen medium (let's keep it to air in this one).
What is the relationship between the aforementioned loudness measured in decibels, and the shockwaves created by supersonic movement? I cannot seem to bridge the two concepts.
Here is the phenomenae I'm trying to connect to this concept, and also to each other:
Note that my interest in this phenomena is from a Sound Design standpoint, not merely physics.