Will a white noise machine prevent a conversation in an office being heard in the hallway?

A white noise machine can help mask conversations in an office, making it less likely for those sounds to be clearly heard in the hallway. By adding a consistent ambient sound, it can reduce the intelligibility of speech and create a more private environment. However, its effectiveness depends on the volume of the white noise, the loudness of the conversation, and the acoustics of the space. While it may not completely prevent conversations from being overheard, it can significantly diminish their clarity.