http://www.xncroft.com/blog/lyceum/voicerecog speak and be turned into bits Fri, 14 Jul 2006 14:55:05 +0000 http://backend.userland.com/rss092 en As it comes with the Sphinx-4 package, the HelloWorld.jar example only recognizes the following words: (Good morning | Hello) ( Bhiksha | Evandro | Paul | Philip | Rita | Will ) To expand this vocabulary, we need to modify a grammar file that the JSGFGrammar class imports, and then we need ... http://www.xncroft.com/blog/lyceum/voicerecog/2006/07/14/add-recognized-vocabulary-to-helloworld-demo-with-different-grammars/ ( diagram taken from Sphinx-4: A Flexible Open Source Framework for Speech Recognition ) NOTE: This post is not complete. The beauty of the Sphinx 4 architecture is its modularity and pluggability. Previously, speech recognition programs were built to fulfill specific roles: continuous speech vs. non-continuous, large vocabulary vs. smaller vocabulary, ... http://www.xncroft.com/blog/lyceum/voicerecog/2006/07/05/sphinx-4-architecture/ Bluetooth headsets could turn out to be the most widely available interface for speaking to the computer, so we wanted to do some tests to see if the demos that came with Sphinx-4 would work with a headset. One useful thing to note is that I had to jump ... http://www.xncroft.com/blog/lyceum/voicerecog/2006/06/30/bluetooth-headset-results/ Sphinx is a HMM based speech recognition system developed at CMU. There are 4 versions of Sphinx. For the moment, I'm exploring Sphinx-4 because it is written in Java, and it would probably combine easiest with the Video Comments work being done at ITP. Getting everything you need to run ... http://www.xncroft.com/blog/lyceum/voicerecog/2006/06/30/on-sphinx-getting-started-with-spinx-4/ I found one useful summary of what speech recognition is here. It details the types of speech recognizers, including speaker-independent, speaker-dependent, continuous speech recognition, isolated speech recognition, and vocabulary constrained system. As the technology exists now, it seems that one has to figure out a compromise between vocabulary ... http://www.xncroft.com/blog/lyceum/voicerecog/2006/06/30/general-speech-recognition-how-it-works-what-types-exist/