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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. Adaptive feedback cancellation - Wikipedia

    en.wikipedia.org/wiki/Adaptive_feedback_cancellation

    Adaptive feedback cancellation originated during the evolution of the hearing aid. The hearing aid became digital, and as such feedback cancellation was needed. In 1980 a directional microphone was introduced in the digital hearing aid, and adaptive feedback cancellation was created to block external noise that the microphone picked up. Today ...

  4. 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]

  5. Feedback suppressor - Wikipedia

    en.wikipedia.org/wiki/Feedback_suppressor

    The adaptive filter approach works by modeling the transfer function of the sound reinforcement system and subtracts the reinforced sound from the inputs to the system in the same way that an echo canceller removes echoes from a communications system.

  6. Frank McCourt still wants to buy TikTok if Chinese owner is ...

    www.aol.com/finance/frank-mccourt-still-wants...

    The request went on to say that the new administration's position could "moot" impending harms, as well as "the need for Supreme Court review." TikTok requested that the D.C. appeals court make a ...

  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. Kraven may be the world’s greatest hunter, but the comic book villain couldn’t manage the climb to the top of box office charts. Sony’s “Kraven the Hunter,” a superhero spinoff starring ...

  9. Trump Adviser Alex Bruesewitz, 27, Collapses on Stage at N.Y ...

    www.aol.com/lifestyle/trump-adviser-alex...

    Donald Trump campaign adviser Alex Bruesewitz collapsed on stage during an appearance at a Republican event in New York City.. On Sunday, Dec. 15, the 27-year-old political strategist was ...