Brown's tactic was to make the home supporters anxious and get them to turn on their own players, something goalkeeper Ankergren also felt during Leeds' 2-2 draw in the FA Cup fourth-round clash.
The Dane, who saved Jermain Defoe's penalty in the first half, said: "You could hear that sometimes. It's similar to our own fans when we play at home because they expect us to win every time and if we're not winning then they will get on our back.
"That's the kind of pressure that you have to deal with at a club like Leeds and like Tottenham. Obviously it's not very nice when your crowd does that to you. We know that for ourselves."
Ankergren expects a frenzied atmosphere for the Elland Road replay, which is scheduled for February 2.
"It will definitely be full," he said.
"It will be buzzing, that's for sure. It will probably be noisy. Hopefully it will be a good game again."