Sound editing cheat

Sound editing can be used as a multiplayer cheat in order to gain an unfair advantage over other players. In this cheat, sounds made by the opponent (and the cheating player as well) are changed to sounds that are presumably either easier to hear for the cheating player, or longer in duration. The non-cheating player hears no difference.

The cheat will vary based on the nature of the sound modification. Various modifications allow the cheating player a means to locate the player that is not normally available, and/or effectively un-silence the silent BFG. The cheat will take the form of an IWAD modification or a PWAD loaded with the game.

Detection of this cheat involves audio observation of the player's live game.

Source

 * This writeup includes text from Sound editing Doom2 cheat, used with permission.