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  2. Tellabs - Wikipedia

    en.wikipedia.org/wiki/Tellabs

    In September 1981, Tellabs introduced the industry's first echo canceller, an advance over the original echo suppressors that synthesized an echo and electronically subtracted it. By 1990, Tellabs had grown to 2,000 employees at 25 locations globally and sales of $211 million.

  3. Has Tellabs Become the Perfect Stock? - AOL

    www.aol.com/news/2012-07-20-has-tellabs-become...

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  4. Is Tellabs' Stock More Compelling Than It Looks? - AOL

    www.aol.com/news/2011-10-31-is-tellabs-stock...

    In this series, we use some carefully chosen metrics to size up a stock's true value based on the following clues: The current price multiples. Numbers can lie -- but they're the best first step ...

  5. Echo suppression and cancellation - Wikipedia

    en.wikipedia.org/wiki/Echo_suppression_and...

    The performance of an echo canceller is measured in echo return loss enhancement (ERLE), [3] [9] which is the amount of additional signal loss applied by the echo canceller. Most echo cancellers are able to apply 18 to 35 dB ERLE. The total signal loss of the echo (ACOM) is the sum of the ERL and ERLE. [9] [10]

  6. Is Tellabs the Perfect Stock? - AOL

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  7. Echo canceller - Wikipedia

    en.wikipedia.org/?title=Echo_canceller&redirect=no

    Language links are at the top of the page across from the title.

  8. Adaptive feedback cancellation - Wikipedia

    en.wikipedia.org/wiki/Adaptive_feedback_cancellation

    Sub-band feedback cancellation is a type of adaptive feedback cancellation that relies less on computations and algorithms, but rather uses the signals already in the device to optimize the feedback cancellation. Sub-band feedback cancellations purpose is to make adaptive feedback cancellation cheaper and more widespread. [8]

  9. Got $1,000? 3 Stocks to Buy Now While They're on Sale. - AOL

    www.aol.com/got-1-000-3-stocks-081500665.html

    O data by YCharts. 3. Coca-Cola. Finally, add Coca-Cola (NYSE: KO) to your list of stocks to buy while they're on sale if you've got an extra $1,000 to put to work for at least a few years.. Coca ...