If your search is related to healthcare or government administration, it may refer to the used by the state of New York (NY) .

The MAPP 3D User Guide provided by Meyer Sound offers detailed documentation on 3D sound field prediction and system optimization. 3. Military History (3 RAR)

In the field of audio engineering, is a standard software for sound system design. The "(3)" in your filename might refer to "Assignment 3" or "Version 3" of a project using this tool.