sphinx speech recognition delay

I am using the 开发者_运维知识库open source sphinx sdk to do some voice recognition. I am currently running the HelloWorld example. However response is very sluggish, it takes several attempts to recognize a word, and sometimes it recognizes it but takes a little to output what I have said. Any ideas how to improve this? Also when I change the grammer file it doesn't update and recognize my new words.

Thanks

• Basically you can use Sphinx in several configurations. If you know the pattern of the voice that you have to recognize then you can use the configuration with custom grammar.
• In that configuration its having higher response rate than normal configuration, since it only listen for predefine words with pre-define pattern. (a Grammar)
• You can define your own grammar file by following the JSGF standards. (more)

Sample Configuration

Configuration configuration = new Configuration();
configuration.setAcousticModelPath(ACOUSTIC_MODEL);
configuration.setDictionaryPath(DICTIONARY_PATH);
configuration.setGrammarPath(GRAMMAR_PATH);
configuration.setUseGrammar(true);
configuration.setGrammarName("mygrammar");

LiveSpeechRecognizer recognizer = new LiveSpeechRecognizer(configuration);

Sample Grammar File

#JSGF V1.0;
grammar mygrammar;
public <COMMON_COMMAND> = [please] turn (on | off) lighs;