Amazon Alexa and Echo
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Amazon Alexa are the voice services and the Amazon Echo is the voice assistant device which saves user's time to do some tasks.
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Amazon Alexa and Echo
- 1. Presented by: Mahesh R. Mahajan BE (IT) Roll No:-11 Amazon Alexa & Echo Seminar on
- 2. Agenda • Amazon Echo and • Amazon Echo History • Echo working • Custom Alexa Skill • Alexa Custom Skill - Reference Architecture • Applications • Advantages • Disadvantages • Conclusion • References
- 3. Amazon Echo • Hands-free speaker. • Echo connects to the Alexa Voice Service and then user can ask query. • Echo has seven microphones and beam forming technology so it can hear you from across the room. • Omni-directional sound. • When you want to use Echo, just say the wake word "Alexa" and Echo responds instantly. Fig.1 Amazon Echo [4]
- 4. Echo Dot and Tap • Has a tiny speaker, otherwise same as Echo – so called Echo Dot. • Typically you'll hook Dot up to your own audio setup (via out jack or Bluetooth), so you can use Alexa with your existing speakers. • The tiny speaker won't output much audio - it's only for Alexa voice feedback (which, again, requires Wi-Fi). • Portable Bluetooth and Wi-Fi enabled speaker. • Unlike Echo, Tap is wireless & must be set into the included cradle in order to charge. • The Tap isn't an always-on, so you can't say "Alexa" to wake it and instead need to press the microphone button on the front. Fig.2 Amazon Dot [5] Fig.3 Amazon Tap [6]
- 5. Amazon Echo History Sr.No. Date Details 1) Sept 14 Amazon Echo was launched by Amazon. 2) Sept 14 Echo became widely available in US. 3) March 16 Amazon unveiled the Amazon Echo Dot and Tap. Amazon opened the API (Alexa Skill kit and Alexa Voice Service) allowing developers to build new skills. 4) Sept 16 Echo became available outside US in UK and Germany.
- 6. Echo Working Alexa Enabled Device / Alexa Endpoint Amazon - Echo, Dot, Tap Amazon Fire TV, Fire TV Stick Req. Voice Stream Resp. Voice Stream Services / Data Sources "Alexa, what’s the weather?" “ . . . ” User Amazon Alexa Service Wikipedia, Weather service, Time service, Traffic update service, Weather service, Music service, News service, etc.
- 7. Alexa & Skills • Alexa is the brain behind Alexa devices like Echo, Dot, Tap and other 3rd party Alexa enabled devices. • Alexa is the voice service that powers Amazon Echo, provides capabilities, or skills, that enable customers to interact with devices in a more intuitive way using voice. • Alexa is similar to Siri, Cortana or ok google/google home. • Functionalities or capabilities built by third party to extend core skills of Alexa and build new customer experiences. • Skill logic could be developed in any language & web stack (Java, Node.js, Python, C#, Go, PHP).
- 8. Type of Skills • Out of the box skills developed by Amazon that comes pre-built when you purchase the device • Time, Weather, News, Wikipedia, Traffic, Music, … BUILT IN SKILLS • Anything that is not covered by Built in Skill • Food delivery, Request Taxi, Game. CUSTOM SKILLS • Skills to control smart home devices like lights, thermostats, router, freeze, car, any smart home automation/IOT device. SMART HOME SKILLS • For building Flash Briefing skills which delivers pre-recorded audio clips and text-to- speech (TTS) updates to customers. • Examples include updates from popular broadcasters and blogs, recent headlines, weather. • Each Flash Briefing skill contains one or more content feeds. FLASH BRIEFING SKILL Third PartyAmazon
- 9. Voice User Interface (VUI) • Design the voice experience – voice experiences are different than web & mobile experience. • Think about a core functionality that you want to build first – your skill should do one thing very well, rather than attempting multiple things. • Later add additional functionality iteratively. • Request Types 1) Launch Request 2) Intent Request 3) Session Ended Request 4) Session Started 5) Audio Player Requests 6) Playback Controller Requests
- 10. Alexa Custom Skill - Reference Architecture Echo/Dot Device AWS Lambda (Server-less compute in cloud) Req. Voice Stream1 2 5 REST service Resp. Voice Stream Services On Hosted/Cloud API Gateway & Management "Alexa, ask Digi Bank for …" “ . . . ” User Alexa Voice Service (AVS) (Cloud) 3 • Identifies skill name • Analyzes & understands the req. • Sends the custom Alexa skill a structured representation of user’s req. Custom Alexa Skill + Alexa Skill Kit 4 6 7 8 9 • Your custom Alexa skill receives the req. • Processes the req. and returns text (image – opt) response • Alexa converts the returned text to speech • Streams to Echo/Dot device
- 11. Type of Intents • Get the time • Get weather update • Get traffic update • Play music • Get the news briefing • Get account balance, get last transactions, get credit card bill (CapitalOne) • Track order status (Dominos) • Get nearest distributors (SE) • Check the shipment status (FedEx) • Set the timer • Send a meeting request • Send an email • Make a reservation for dinner • Buy something from Amazon • Book a ride (Uber) • Pay last credit card bill (CapitalOne) • Order a pizza (Dominos) ASKING DOING
- 12. Applications • Home Automation • Remote Instruction • Entertainment • Shipment Status
- 13. Advantages • Far-field voice recognition. • Omni-directional sound. • Companion with Android, iOS, Desktops. • Bluetooth Enabled. • Echo can be extended with custom skills.
- 14. Disadvantages • Requires continuous power supply. • Costly • Requires Internet connection.
- 15. Conclusion • Amazon echo is a voice assistant device and provides a way to communicate with it via voice and can provide different services like Food delivery, Request Taxi, Weather, News, Wikipedia, Traffic, Music, any smart home automation/IOT device. So it can be used almost anywhere like in home, office.