Getting started with Smart Speakers & Voice Interfaces Ben - PowerPoint PPT Presentation

Getting started with Smart Speakers & Voice Interfaces Ben Teese Darren Cibis

What we’re going to do •Demo •Amazon Echo •Google Home •Parting thoughts

Demo

The Interweb

Amazon Echo

Lambda Alexa Skill Function

The Lambda Function exports.handler = function(event, context, callback) { const request = event.request; const session = event.session; const type = request.type; if (type === 'LaunchRequest') { … } else if (type === 'IntentRequest') { onIntent(request, session, callback); } else { … } };

Drilling in… function onIntent(request, session, callback) { const intent = request.intent; const intentName = intent.name; if (intentName === 'AMAZON.HelpIntent') { … } else if (intentName === 'AMAZON.StopIntent') { … } else if (intentName === 'SetLampColour') { setLampColor(intent, session, callback); } }

f unction setLampColor(intent, session, callback) { const position = intent.slots.position.value || session.attributes.position; let newSessionAttributes, responseText; if (position) { const colour = intent.slots.colour.value; newSessionAttributes = { position }; responseText = "Setting " + position + " lamp colour to " + colour; // Call Lif-X service with the position and colour … } else { responseText = "I'm not sure which lamp you want to use. Please try again.”; } callback(null, { version: '1.0', sessionAttributes: newSessionAttributes, response: { outputSpeech: { type: ‘PlainText', text: responseText, }, shouldEndSession: false } }); }

Alexa Skill Key Concepts •Intents •Sample Utterances •Slots •Dialog Model

Google Home

Actions on API.AI Cloud Google Agent Function

Cloud Function exports.apiDemo = function apiDemo (req, res) { const http = require(‘https'); var color = req.body.result.parameters.Color; var position = req.body.result.parameters.Position; const options = { protocol: "https:", hostname: "api.lifx.com", path: "/v1/lights/label:" + position + "/state", method: "PUT", headers: {"Authorization": "Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"} }; const httpReq = http.request(options); httpReq.on('error', (e) => { console.log('problem with request: ${e.message}'); }); httpReq.write(JSON.stringify({color: color})); httpReq.end(); res.send(); };

Webhook Responses

API.AI Agent Key Concepts •Intents •User Expressions •Entities •Context

It’s About Conversational Interfaces

Thanks @benteese @darren_cibis