I think this one could go either way.
Knocks 0828hrs 5-4-08.mp3
But this one is very close range and lower volume with two different knocks. The second one sounds like two hands clapping. This recorder was hanging on the backside of a tree with a camera trap on it watching a couple catfish strung up in a tree about 10 yards in front of it. Humans just don't behave this way around cameras and bait in the middle of the night.
River camp knocks-0053hrs5-4-08.mp3