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Home Automation with Speech Recognition

Billy Overton 2012-9-19. Home Automation with Speech Recognition. Controlling Your Devices. Getting back to software. Common Communication Methods. RS-232 HTTP GET/POST Infrared Custom. RS-232. Pros Many devices have RS-232 control Extremely simple Has common libraries

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Home Automation with Speech Recognition

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  1. Billy Overton2012-9-19 Home Automation with Speech Recognition

  2. Controlling Your Devices Getting back to software

  3. Common Communication Methods • RS-232 • HTTP GET/POST • Infrared • Custom

  4. RS-232 • Pros • Many devices have RS-232 control • Extremely simple • Has common libraries • Usually well documented • Cons • Uncommon Hardware • No common command set

  5. RS-232 in PowerShell http://files.support.epson.com/pdf/plhc87u/plhc87uug.pdf

  6. HTTP GET/POST • Pros • Uses pre-existing controls systems • Can be as simple as an iframe • Customizable • Cons • Usually less documented

  7. Infrared • Pros • Almost everything has a remote • Will cover all the functions a user wants • Has premade tools: (Win)LIRC • http://lirc.sourceforge.net/remotes/ • Cons • Time consuming • Hardware Dependent

  8. Custom • Pros • You can do anything you want • Cons • More hardware

  9. Speech Recognition with Kinect From voice to code

  10. Microsoft SDKs • Kinect for Windows • Microsoft Speech Platform

  11. Kinect Setup

  12. Kinect Setup

  13. Kinect Setup

  14. Speech Recognition • Speech Recognition Engines • Grammars • Recognition Results

  15. Speech Recognition Engines • There are two types • We’ll use SpeechRecognitionEngine();

  16. Grammars • Define what we are looking for • Have three methods of creation • GrammarBuilder class • SrgsGrammar class • Srgs XML file

  17. GrammarBuilder • Allows you to add items such as strings and Choices objects to build a grammar • Used to create a Grammar object

  18. GrammarBuilder Example

  19. Adding a Grammar • recognitionEngine.LoadGrammar(g)

  20. Listening for Speech • Two Methods • Synchronous • recognitionEngine.Recognize() • Returns RecognitionResult • Asynchronous • recognitionEngine.RecognizeAsync() • recognitionEngine.RecognizeAsync(mode) • Raises SpeechRecognized event

  21. RecognitionResult • Contains all data regarding one grammar match. • Most notably contains: • Result.Text • Result.Confidence

  22. Full Example

  23. Questions and Contact Information • Name: Billy Overton • Email : overtonb@goldmail.etsu.edu • IRC: logos on irc.freenode.net • Join us in the #etsuacm channel

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