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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. 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]

  4. Telephone hybrid - Wikipedia

    en.wikipedia.org/wiki/Telephone_hybrid

    ITU-T Recommendation G.131 describes the relationship of echo delay vs. amplitude to listener annoyance. At 100ms, 45 dB return loss is required for less than 1% of test subjects to express dissatisfaction. Good cancellation depends upon the balancing network having a frequency-vs.-impedance characteristic that accurately matches the line.

  5. 2 Positive Signs for Tellabs - AOL

    www.aol.com/2011/09/17/2-positive-signs-for-tellabs

    Tellabs (NAS: TLAB) carries $291.7 million of goodwill and other intangibles on its balance sheet. Sometimes goodwill, especially when it's excessive, can foreshadow problems down the road. Could ...

  6. Echo canceller - Wikipedia

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

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

  7. Postpartum Weight Loss: 3 Steps to Get Started (& More Tips ...

    www.aol.com/postpartum-weight-loss-3-steps...

    Howard throws 2 TD passes to Smith to help Ohio State rout Tennessee 42-17 in CFP. Sports. Associated Press. JuJu Watkins and No. 7 USC hold off Paige Bueckers and fourth-ranked UConn 72-70.

  8. Why Am I Snacking So Much? (& How to Stop) - AOL

    www.aol.com/why-am-snacking-much-stop-125800077.html

    2. Eat More Slowly. A 2019 study found that eating a meal at a slower pace helped participants feel fuller from that meal. It also resulted in lower levels of ghrelin — the hormone responsible ...

  9. Echo cancellation - Wikipedia

    en.wikipedia.org/?title=Echo_cancellation&...

    This page was last edited on 4 April 2014, at 16:49 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...