>>12281673There was no possibility for regular sound to exist then (theoretically), so no sound was made. If it sounded like anything it would sound like a firecracker reverberation inside of itself since space would be expanding so rapidly in relative relation to the energy "distributed". So in reality it would just look and sound like a bubble of matter/light in the midst of nothingness. And assumingly if you were to go back in time to that moment and measure it, it would exist to you as practically every frequency of energy in one instant at every amplitude, depending on what you are consciously observing.