Depends on three factors really:
1. Manufacturer SOPs
2. Operator SOPs
3. Individual airport noise abatement procedures
For example, some airports want you to maintain V2+10 until 3000 ft! Each airport can differ and exact noise abatement is detailed in the plates (eg. Jeppesson or Aerad). Some airports have no noise abatement procedures at all - in which case you would revert to 1 & 2.
Cheers,
LOC
