This could be an igniter problem causing delayed ignition which will be associated with a popping sound, but you are describing a booming sounds which I would be a bit more concerned with. This would indicate to me that gas is flowing, then igniting in a large quantity, which could still indicate an igniter, but may also be the burner itself. If the ignition holes near the igniter are obstructed, then the ignition point is further away from the igniter and more gas is needed to get back toward the igniter. I would replace the igniter due to age, and while you are in there, make sure the burner is cleaned (take it out if you need to) and all the holes are open. Also, ensure it is mounted correctly over the orifice (it should only go on one way) then give it a try. You don't need to turn off the gas to change an igniter, but do turn off the electricity.

You will need to remove the bottom oven panel first, which usually pulls up from the back and then can be worked out of the cavity. Below will be the flame spreader which is usually held in place with couple screws. Below will be the burner and it too is held in place with a few screws. One end will fit over the gas orifice and try using the end of a paper clip to push into each of the holes to make sure they are clear. The gas doesn't need to be off to do this.