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  2. Amazon Echo Buds - Wikipedia

    en.wikipedia.org/wiki/Amazon_Echo_Buds

    Echo: Type: Wireless earbuds: Release date: October 30, 2019 () Input: Echo Buds (each) Dual external beam-forming microphones, single internal microphone, accelerometer, proximity, touch: Connectivity: Echo Buds (each) Bluetooth Charging Case micro-USB port: Dimensions: Echo Buds (each) 22 x 23 x 24 mm Charging Case 57 x 77 x 29 mm: Mass: Echo ...

  3. Anechoic chamber - Wikipedia

    en.wikipedia.org/wiki/Anechoic_chamber

    Anechoic chamber. An anechoic chamber ( an-echoic meaning "non-reflective" or "without echoes") is a room designed to stop reflections or echoes of either sound or electromagnetic waves. They are also often isolated from energy entering from their surroundings. This combination means that a person or detector exclusively hears direct sounds (no ...

  4. Noise-cancelling headphones - Wikipedia

    en.wikipedia.org/wiki/Noise-cancelling_headphones

    Noise -cancelling headphones alongside a carry case. Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing . Noise cancellation makes it possible to listen to audio ...

  5. Amazon Echo - Wikipedia

    en.wikipedia.org/wiki/Amazon_Echo

    The Echo Connect is a small adapter that plugs into any Echo and a home phone line, allowing the Echo to make voice calls through a home phone number. [91] In September 2018, Amazon announced the Echo Sub , a subwoofer that connects to other Echo speakers, and the Echo Wall Clock , which can display how much time is remaining on timers set with ...

  6. Amazon Lab126 - Wikipedia

    en.wikipedia.org/wiki/Amazon_Lab126

    Amazon Lab126 [4] (sometimes known as Lab126) is an American research and development and computer hardware company owned by Amazon.com. [5] It was founded in 2004 by Gregg Zehr, [6] previously Vice President of Hardware Engineering at Palm, and is based in Sunnyvale, California. [7] It is widely known for developing Amazon's Kindle line of e ...

  7. Echo suppression and cancellation - Wikipedia

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

    Echo cancellation alone may be insufficient in many applications. Echo cancellation and suppression can work in conjunction to achieve acceptable performance. Quantifying echo. Echo is measured as echo return loss (ERL). This is the ratio, expressed in decibels, of the original signal and its echo.

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