Echo is a hands-free speaker that you control with your voice. Ask Alexa to play music, answer questions, make calls, tell you the news, sports scores, weather, and more.

Amazon Echo is a smart speaker, which means it does more than play music. With Amazon's virtual assistant Alexa, Echo can tell you about the weather, create shopping lists, help you in the kitchen, control other smart products such as lights and televisions, and a lot more.

Many people use the names Amazon Alexa and Amazon Echo interchangeably but there is a difference between the two. The short answer to this is: Alexa is just the AI service and not the product. On the other hand, Amazon echo is the physical device that is used to interact with Alexa.

virtual assistant technology Amazon Alexa, also known simply as Alexa, is a virtual assistant technology largely based on a Polish speech synthesizer named Ivona, bought by Amazon in 2013. It was first used in the Amazon Echo smart speaker and the Echo Dot, Echo Studio and Amazon Tap speakers developed by Amazon Lab126.

The word echo derives from the Greek ἠχώ (ēchō), itself from ἦχος (ēchos), "sound". Echo in the Greek folk story is a mountain nymph whose ability to speak was cursed, leaving her able only to repeat the last words spoken to her.

Amazon's Echo is simply the name given to the physical products themselves, the speakers which house the AI Alexa. Of course, you have to say the word "Alexa" every time you use the Echo - leading everyone to just call the smart speaker Alexa.

As the name suggests, it's also a smart home hub. Echo Hub supports major smart home protocols, including Zigbee, Matter, Thread, Bluetooth Low Energy (BLE), and Amazon Sidewalk; and you can connect to the internet via Wi-Fi or Ethernet with a compatible Power-over-Ethernet (PoE) converter. And, it's just $179.99.

Alexa features: what can Alexa do?

• Play radio stations.
• Stream music from Spotify, Apple Music and more.
• Play podcasts.
• Set timers and alarms.
• Get tailored news reports.
• Ask web-based questions.
• Control smart home devices with your voice.
• Group together smart home devices to work together using single commands.

Yes. Alexa and Siri are applications powered by artificial intelligence. They rely on natural language processing and machine learning, two subsets of AI, to improve performance over time. Amazon's Alexa is a voice-controlled system that works alongside the Echo speaker that receives the spoken request.

1. : the repetition of a sound that is caused by reflection of sound waves. 2. : the sound that is due to reflection of sound waves.

Echocardiography utilizes properties of sound wave interaction with human tissue called reflection and scattering (Figure 1-1). The human body consists of various tissues, each with a different composition and density, that result in a sound-related property called acoustic impedance that is specific to the tissue.

Alexaundra Christine Schneiderman