Book Image

Voice User Interface Projects

By : Henry Lee
Book Image

Voice User Interface Projects

By: Henry Lee

Overview of this book

From touchscreen and mouse-click, we are moving to voice- and conversation-based user interfaces. By adopting Voice User Interfaces (VUIs), you can create a more compelling and engaging experience for your users. Voice User Interface Projects teaches you how to develop voice-enabled applications for desktop, mobile, and Internet of Things (IoT) devices. This book explains in detail VUI and its importance, basic design principles of VUI, fundamentals of conversation, and the different voice-enabled applications available in the market. You will learn how to build your first voice-enabled application by utilizing DialogFlow and Alexa’s natural language processing (NLP) platform. Once you are comfortable with building voice-enabled applications, you will understand how to dynamically process and respond to the questions by using NodeJS server deployed to the cloud. You will then move on to securing NodeJS RESTful API for DialogFlow and Alexa webhooks, creating unit tests and building voice-enabled podcasts for cars. Last but not the least you will discover advanced topics such as handling sessions, creating custom intents, and extending built-in intents in order to build conversational VUIs that will help engage the users. By the end of the book, you will have grasped a thorough knowledge of how to design and develop interactive VUIs.
Table of Contents (12 chapters)

About webhook

In the previous chapter, intents were fulfilled statically by adding text responses. This is ideal if you already know the questions that will be asked and their answers, such as FAQs. But in real-world scenarios, the questions asked by users often require complex calculations; the answers might come from searching a database, or even hitting external web services in order to build responses. For example, if you were building a weather voice interface, you would most likely use the AccuWeather application programming interfaces (APIs) (https://developer.accuweather.com/apis). So, in order to achieve calling external APIs to build proper responses requires your own middle-tier server. In Dialogflow, the concept of allowing your middle-tier server to serve responses dynamically is called fulfilling intents through webhook. Dialogflow provides a built-in Node.js server...