NSA Acoustics for Spying pdf.pdf

The NSA is a leader in acoustic research. These advanced
acoustic technologies are a cornerstone of the NSA’s mission to
produce foreign signals intelligence. With the enormous increase
in voice and acoustic data, the demand for faster, more accurate
voice and acoustic signal analysis and filtering has never been
greater. To meet this growing demand for voice signal
intelligence, the NSA continually conducts research in acoustics
signal analysis, phonetics, audio signal identification, and audio
transcription.
Within the acoustics technology area, the NSA has several
technologies available for license. These technologies include:
methods for identification, extraction, and analysis of voice and
voice signals; foreign language voice recognition; duplicate voice
identification; and methods of measuring voice enhancement.