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How do Echo Devices Recognize the Wake Word?

Echo devices are designed to detect only your chosen wake word (Amazon, Alexa, Computer, or Echo). The device detects wake word by identifying acoustic patterns that match the wake word. Once the word is detected, audio begins streaming to the cloud, including a fraction of a second of audio before the wake word. No audio is stored or sent to the cloud unless the device detects the wake word (or Alexa is activated by pressing a button).

 

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Have you bought the new Amazon Echo Dot and don't know Amazon Alexa Skills?

Connect with others 

Call and message hands-free. Instantly drop in on other rooms in your home or make an announcement to every room with a compatible Echo device.

  • Use another speaker
  • Connect to your own speakers over Bluetooth or with a 3.5 mm audio cable.
  • Alexa has skills (Alexa.amazon.com)
  • 50,000+ skills, Alexa is always getting smarter and adding new skills like tracking fitness, playing games, and more.
  • Voice control your smart home 
  • Turn on lights, adjust thermostats, lock doors, and more with compatible connected devices
    • Meet the all-new Echo Dot 
    • Popular smart speaker, with new fabric design, and improved speaker for richer and louder sound.
    • Voice control your music 
    • Stream songs from Amazon Music, Spotify, Apple Music, Sirius XM, and others.
    • Bigger, better sound
    • Pair with a second Echo Dot (3rd gen) for rich, stereo sound. Fill your home with music with compatible Echo devices in different rooms.
    • Ready to help 
    • Ask Alexa to play music, read the news, answer questions, check the weather, set alarms, control compatible smart home devices, and more.
  • Now download Alexa app for echo device.
Source: http://www.downloadappalexaecho.com