What does detonation sound like?

Kinda sounds like timing, or tune. But what do I know? There is Way more experience than mine here
It very well could be timing related i had been tuning on my timing before I changed the trans gasket. It was running like crap too. Usually when I punch it at a roll it will smoke the tires today it just bogged down and loaded up. After I got up in the rpm range it ran great but its a dud down low. Timing is set at 16 intial 36 total