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Other terms uses for these Artificial Intelligence Voice Assistant devices, and software are:
Smart Assistant, Smart Speaker, Digital Assistant, personal digital assistant, voice activated device, and Far Field Voice Technology.

    Amazon Dot        Google Mini
† Other Echo speaker models
* Other Google Assistant Speakers

They all answer questions:
What time is it?
What is the weather tomorrow?
And do things like:
Set an alarm for 6 AM
Add milk to my shopping list
Play some classical music.

Hardware Software Price Best at Audio
Amazon Echo Plus and Dot Alexa $149
Widest smart-home device support. Lights, switches, thermostat
Video calling with Echo Spor or Echo Show
Amazon Echo Show Alexa $60-$170 Video Calls, Amazon Prime videos, see what music you’re playing, pause, or skip tracks
Sonos One Alexa
Sonos App
$200 Similar to Echo, Better sound
Google Home
Home Mini
Android Phone
Google Assistant, Google Now $129
Home entertainment control. Interface to smart TV (or a TV with chromecast attached) or audio.
Best at answering general questions.
Apple HomePod speaker
Apple iPhone, iPad
Siri (Sassy) $350 Best sound
MICROSOFT Invoke Smart Speaker
Windows Phone,
Cortana Good at answering questions
JBL Link 20 $200 Wi-Fi
Harman Kardon Invoke Cortina $100 best speaker for Skype
UE Blast and Megablast $230
In addition to its built-in features, the Alexa platform includes a growing list (more than 15,000 at last count) of "Skills," akin to apps on a smartphone, that unlock capabilities such as reading recipes, ordering pizza, or calling an Uber.

Amazon Echo Dot (Alexa):

Google Home Mini:

  • 1st generation Google Home Mini - Model HOA
  • 2nd generation Google Nest Mini (2019)
    Indicator lights over volume change touch spot
    Power jack not micro USB
    Machine learning chip onboard (less cloud access)

Sample Answers to Questions or Commands

Far-field voice input processing (FFVIP). - The ability of a microphone to separate voices from noise when the speaker is 12 to 15 feet away.

The Best Smart Speakers of 2018 | PCMag.com
Amazon Echo 2 vs Sonos One vs Google Home | Best Smart Speaker Comparison | RIZKNOWS
75 Point Comparison of Amazon Echo to Google Home - HomeAlarmReport.com
Sample Answers
Smart Assistant Review: Living With Alexa, Google and Siri | Time
Amazon Echo vs. Google Home: Which Voice Controlled Speaker Is Best for You?: Wirecutter Reviews | A New York Times Company
Make the Most Out of Amazon Echo and Google Home | WIRED
Google Home Mini review - The Verge
Siri vs. Google Assistant vs. Alexa vs. Cortana: Which AI is best? - Business Insider
Dave's notes
Digital assistants: Siri vs Google vs Alexa | TechRadar

last updated 26 Mar 2020