If you’ve misplaced your NoiseTools database, there’s a handy little feature within the program itself that can help you locate it.
From the main menu in NoiseTools, choose Tools > Databases.
In the Databases window, click ‘Find’ at the bottom.
NoiseTools will then search all available disk drives and any databases it finds to the list.
You can then choose which database you want to use by checking the box on the left-hand side of the entry and moving the entry to the top of the list.