Hands-free Eyes-free Text Messaging Derek Woodman, Jeffrey Gehring, Abdullah Alshalan Mobile Computing Fall 2010
Introduction Our goal was to make an android application that makes it save to drive while texting Common place to have a hand-free system for placing phone calls We are delivering a system that does this for texting The system is hands-free and eyes-free so the driver still focus on driving 11/24/2010
How? We used several APIs available in the android operating system TTS – text to speech STT – speech to text Messaging API Used Android because it is free and had access to lab phones Used APIs because well documented and didn’t have to write our own Android provides the tools We put them together and performed testing. 11/24/2010
Design 11/24/2010
Application Demo In class demo of SafeText Prepare to be amazed! 11/24/2010
Testing Most papers we have seen are concerned with how fast or accurate the speech system works We focused on how well it improves the user’s attention – the main goal! Our testing focused on the user’s reaction time. 11/24/2010
Stop Light Simulator Shown picture of a stoplight The light will change periodically User asked to react to the light changing Each user was tested under the following conditions No texting Regular texting Voice texting Measure the reaction time 11/24/2010
Stop Light Simulator http://www.youtube.com/watch?v=_d3em1pdB cU 11/24/2010
Results 11/24/2010
Discussion Our test shows that our application improves the reaction time of users while texting Reaction time reduced by more than half Android’s speech recognition was better than expected. Issues with Android – learning curve Several threads running at once Have to use function call backs to make sure processing has finished 11/24/2010
Questions? 11/24/2010