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  2. Echo suppression and cancellation - Wikipedia

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

    Echo suppression and echo cancellation are methods used in telephony to improve voice quality by preventing echo from being created or removing it after it is already present. In addition to improving subjective audio quality, echo suppression increases the capacity achieved through silence suppression by preventing echo from traveling across a ...

  3. AEA Explorer - Wikipedia

    en.wikipedia.org/wiki/AEA_Explorer

    The explorer is a single-engined strut-braced high-wing monoplane with a retractable tricycle landing gear that retracts into under-fuselage sponsons. The prototype, designated Explorer 350R first flew in 1998 and was soon exhibited on promotional tours of Australia and the United States . The Explorer is currently being offered in two versions ...

  4. Leaf blower - Wikipedia

    en.wikipedia.org/wiki/Leaf_blower

    Leaf blowers. A leaf blower, commonly known as a blower, is a device that propels air out of a nozzle to move debris such as leaves and grass cuttings. Leaf blowers are powered by electric or gasoline motors. Gasoline models have traditionally been two-stroke engines, but four-stroke engines were recently introduced to partially address air ...

  5. FAB-500T - Wikipedia

    en.wikipedia.org/?title=FAB-500T&redirect=no

    This page was last edited on 17 November 2018, at 07:28 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike License 4.0; additional terms may apply.

  6. FAB-500 - Wikipedia

    en.wikipedia.org/wiki/FAB-500

    The FAB-500 is a Soviet -designed 500-kilogram (1,100 lb) general purpose air-dropped bomb with a high-explosive warhead, primarily used by the Russian Aerospace Forces, former Soviet republics and customer countries. The original M-54 model was rolled out in 1954, shaped for internal carriage by heavy bombers, a low-drag M-62 version in 1962 ...

  7. Echo sounding - Wikipedia

    en.wikipedia.org/wiki/Echo_sounding

    Echo sounding or depth sounding is the use of sonar for ranging, normally to determine the depth of water . It involves transmitting acoustic waves into water and recording the time interval between emission and return of a pulse; the resulting time of flight , along with knowledge of the speed of sound in water, allows determining the distance ...

  8. List of Star Trek technical manuals - Wikipedia

    en.wikipedia.org/wiki/List_of_Star_Trek...

    technical manuals. Star Trek Technical Manuals are a number of both official and fan-produced works detailing the technology of the fictional Star Trek universe; most pertain to starship design, though others target equipment used in the various Star Trek television series and films. Franz Joseph Schnaubelt published the original Star Fleet ...

  9. Sonic soot blowers - Wikipedia

    en.wikipedia.org/wiki/Sonic_soot_blowers

    Sonic soot blowers offer a cost-effective and non-destructive means of preventing ash and particulate build-up within the power generation industry. They use high energy – low frequency sound waves that provide 360° particulate de-bonding and at a speed in excess of 344 metres per second. Because they employ non-destructive sound waves ...

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