22 CHAPTER 3 Digital Forensics: The Subdisciplines 3.2.8 Digital audio forensics Digital audio forensics consists of the enhancement and analysis of audio record- ings created with any type of digital recording device. Audio forensics can be used to verify the integrity of audio recordings, or to show that an audio recording has been tampered with. If a recording is of poor quality, it can also be used to enhance the audio track so that voices become more legible, or background noise that is of interest could be more easily heard. It is also possible to perform voice pattern recognition with specialized forensic software. These software programs allow for the possible identification of voices with particular people within an audio recording. The software also has safeguards to reduce the possibility of a false positive. The other method of voice pattern rec- ognition is the manual examination of a spectrograph. A spectrograph is a visual representation of auditory data. Just as sheet music is used to explain how a song should be performed using musical notes and how long the song should be, a spec- trograph represents the different sound waves over time in frequency and intensity. 3.2.9 Multiplayer game forensics