I think you're appreciating (what I also appreciate) that the chomp, ghost bite sound, and death sounds are all in the same tempo/bpm, so that when things happen it's in "rhythm"

If you look closely, the chomping visual doesn't -actually- match up with the chomp sound, it's closer to if there was a track of chomping at a certain chomps per minute that gets toggled on/off if pacman is chomping. Same with everything else-is, so you mute/unmute sounds when the event happens, rather than trigger a sound play.

Or so it sounds and seems to my ears and eyes.