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NSA SIDtoday: VoiceMatch: A New Offering at NCS
Aug. 15 2018 — 2:02 p.m.

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(C) VoiceMatch: A New Offering at NCS
FROM: Adolf Cusmariu
Technical Director, Operational Technologies (S202B11)
Run Date: 07/18/2006
(S//SI) Several articles this year introduced voice-matching analyses based on powerful
technology recently obtained from MIT/Lincoln Laboratories; the analyses involved the voices of
Bin Laden, Al-Zawahiri, Zarqawi, and other lesser-known or suspected terrorists. (See one of the
earlier articles .)
(C) Due to language analyst interest, the National Cryptologic School has approved a formal
short course (four hours) on practical use of MIT's tools; the designator is TOOL 2019. The
course will be taught by the author, and will be based on a tutorial found at:
tutormit.html
(C) The course will be self-contained and will include some basics of the speech signal to make
the technology more intuitive. Topics will include:
1. The Speech Signal
2. The WaveSurfer editing and playback tool
3. The MIT voice-matching approach
4. The Speaker Comparison Algorithm (SCA) tool
5. Model building in the Trainer
6. The Speaker Watchlist Tool (SWT)
7. Language-independent features
8. Error sources
9. Tricks-of-the-trade
Students will have MIT's tools loaded on their desktop PC's at the NCS, together with a voice
database for comparison and testing. An atmosphere of experimentation and discovery will be
fostered.
(C) In order to give us a better idea how many plan to sign up for this course, please contact
either the author (
) or the NCS's
(
) and let us know of your
interest.
"(U//FOUO) SIDtoday articles may not be republished or reposted outside NSANet
without the consent of S0121 (DL sid_comms)."
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DERIVED FROM: NSA/CSSM 1-52, DATED 08 JAN 2007 DECLASSIFY ON: 20320108