c# - System.Speech down microphone sensitivity -

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i know how down microphone sensitivity system.speech in c#..

to explain myself, have grammar file, , application should begin record me when sivraj (my program's name)

however, can totally different, , application understand 'sivraj'...

there part xml file : 

<rule id="mouskie" scope="public"> <item>   <one-of>     <item>sivraj</item>   </one-of> </item> <ruleref special="garbage" /> <one-of>   <item>     <one-of>       <item>quit</item>     </one-of>     <tag>$.mouskie={}; $.mouskie._value="quit";</tag> // quit programm when sivraj + quit   </item>   ..... etc etc

and function start recognition engine :

srgsdocument xmlgrammar = new srgsdocument("grammaire.grxml"); grammar grammar = new grammar(xmlgrammar); asrengine = new speechrecognitionengine(); asrengine.setinputtodefaultaudiodevice(); asrengine.loadgrammar(grammar);  asrengine.speechrecognized += asrengine_speechrecognized; asrengine.speechrecognitionrejected += asrengine_speechrecognitionrejected; asrengine.speechhypothesized += asrengine_speechhypothesized;

finally, recover data here :

 recotext.text = e.result.text;  devine.text = "";  affiche.text = "";   string basecommand = e.result.semantics["mouskie"].value.tostring();  commandtext.text = basecommand;   if (basecommand.equals("quit"))  {    m_speechsynth.speech("au revoir", voicegender.male, voiceage.adult);    environment.exit(0);  }

in scenario not looking microphone sensitivity. believe looking phrase confidence.

when engine returns recognition results returns confidence score along it. "basically saying how confident heard said." 

if (speech.recognition.recognitionresult.confidence > .20) {     //do stuff } else {    // ignore }

this contains value 0 1 1 being confident , 0 being background noise causing reco events. have play around confidence value makes sense since highly grammar , environment specific.

another thing change trigger word. doubt lexicon speech engine has phrase sivraj in it. in case engine try , make guess phonemes make word (you can supply them in grammar custom pronunciation if have linguistic background). start recording have better chance give more decent experience.


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