A detailed description is given of the procedures of the Federal Bureau of Investigation (FBI) to determine whether an investigative or other forensic tape is an original or a duplicate, and whether there have been any alternations to the recording. Information is provided on contributor submitted material, the playback of recordings, an analysis overview, critical listening, physical inspection, magnetic development, instrumental analyses (waveform, narrow-band spectrum, and spectrographic), miscellaneous techniques, examination examples, training of examiners, evidence handling, and testimony.
http://www.aes.org/e-lib/browse.cfm?elib=6053
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is free for AES members and E-Library subscribers.
Learn more about the AES E-Library
Start a discussion about this paper!