Every word of every message in the frequencies and channels selected at a station is automatically searched. The question is whether NSA's really obeying the rules. Automatically generating a topic description for text and searching and sorting text by topic using the same United States Patent 5,937,422 Nelson , et al. In benchmark testing, USC's speech recognition system bested all existing computer systems and outperformed the keenest human ears.
Human listeners can deal with only a fraction as much.
And the system can pluck words from the background clutter of other voices the hubbub heard in bus stations, theater lobbies and cocktail parties, for example. With just a minor adjustment, the system can identify different speakers of the same word with superhuman acuity.