Book Image

Voice Application Development for Android

Book Image

Voice Application Development for Android

Overview of this book

Speech technology has been around for some time now. However, it has only more recently captured the imagination of the general public with the advent of personal assistants on mobile devices that you can talk to in your own language. The potential of voice apps is huge as a novel and natural way to use mobile devices. Voice Application Development for Android is a practical, hands-on guide that provides you with a series of clear, step-by-step examples which will help you to build on the basic technologies and create more advanced and more engaging applications. With this book, you will learn how to create useful voice apps that you can deploy on your own Android device in no time at all. This book introduces you to the technologies behind voice application development in a clear and intuitive way. You will learn how to use open source software to develop apps that talk and that recognize your speech. Building on this, you will progress to developing more complex apps that can perform useful tasks, and you will learn how to develop a simple voice-based personal assistant that you can customize to suit your own needs. For more interesting information about the book, visit http://lsi.ugr.es/zoraida/androidspeechbook
Table of Contents (19 chapters)
Voice Application Development for Android
Credits
Foreword
About the Authors
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Afterword
Index

Chapter 6. Grammars for Dialog

You will have noticed that the inputs in the form-filling dialogs studied in the previous chapter were restricted to single words and phrases. This chapter introduces the use of grammars to interpret more complex inputs and also to extract their meaning. Two types of grammars in common use for commercial applications are hand-crafted grammars for input that is predictable and well-defined, and statistical grammars for more robust performance with the less well-formed input typical of conversational speech.

By the end of this chapter, you should be able to develop apps that support more extended user input, making use of hand-crafted as well as statistical grammars.