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Rapid BeagleBoard Prototyping with MATLAB and Simulink

You're reading from  Rapid BeagleBoard Prototyping with MATLAB and Simulink

Product type Book
Published in Oct 2013
Publisher Packt
ISBN-13 9781849696043
Pages 152 pages
Edition 1st Edition
Languages
Concepts
Toc

Table of Contents (15) Chapters close

Rapid BeagleBoard Prototyping with MATLAB and Simulink
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
1. Introducing BeagleBoard 2. Installing Linux on the BeagleBoard 3. C/C++ Development with Eclipse on Windows 4. Automatic Code Generation 5. Digital I/O and Serial Communication 6. Voice Recognition 7. Digital Video-Based Motion Detection Wrapping Up Index

Configuration of the voice recognition system

In this chapter, for the purpose of demonstration, we use the output of the recognition system to control the LED on the BeagleBoard. If the BeagleBoard with voice recognition capability is connected with external actuators and peripheral devices, it can be used to turn on and turn off TV, voice authorization, and so on.

The following figure illustrates the configuration of the voice recognition example and some additional devices and packages required for this example:

  • Hardware: A microphone with a 3.5 mm jack

  • Software: The DSP system toolbox in MATLAB/Simulink

As shown in the previous figure, the microphone is connected to the BeagleBoard's audio-in port and the sound is converted into sampled digital audio data by the audio input device (an accelerated audio encoding and decoding (CODEC) chip TPS65950) on the BeagleBoard. The digital audio data is a stream of 16-bit integers sampling at a specified rate. The audio data is presented in the form...

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