Meanings of audible symbology

Good day to all of you. My question comes from a dream I had last night where, after the events occurred, out of nowhere a wrapping of three knocks occurred, which woke me up immediately. I've had a few dreams like this, where someone whispered my name or even said a string of nonsensical words.

These symbols feel archetypal in nature by the way they were perceived to be audible instead of a simple thought.

Before anyone asks, I haven't ruled out the possibility of there actually being three knocks irl, but it doesn't discount the question anyways.

What would Jung say about audible symbolism/archetypes