User Interface Service Software Developerís Guide - Hitech Projects

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January 2008 Public Then, the SpeakerRecognition service is called for identification on the recorded speech input. xmlIdentificationResult = proxy.identify<strong>User</strong>(recFileURL, "", "normal"); The result is returned in a XML formatted string that should be parsed for extracting meaningful information. Two methods are provided for that reason: static public double xmlGetNumNode(string xmlIdentResult, string nodeName) static public string xmlGetStringNode(string xmlIdentResult, string nodeName) The structure of the SpeakerRecognition service response is as follows: somereturnCode someuserID someidentificationScore some Error description The following table summarizes the possible returned codes: Speaker Recognition – Identification return codes returnCode Status Description > 0 success returnCode indicates the number id of the identified speaker. The name of identified speaker is returned by referring to field userX of section [spk<strong>User</strong>s] of the configuration file SpkSettings.cfg -1 error Input audio file does not exist/corrupted -2 error meanStd model file does not exist -3 error Background reference codebook does not exist -4 error At least one of the user models does not exist -5 error Less than 0.5 sec of speech in input audio file -6 error No user was identified -7 error Invalid configuration file. The following images present the response XML string and the parsed output of the demo application on both successful and unsuccessful identification. Amigo IST-2004-004182 39/114
January 2008 Public At the end the application asks if the user wants to repeat the entire process or quit. Amigo IST-2004-004182 40/114
Page 1 and 2: IST Amigo Project Deliverable D4.7
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User Interface Service Software Developerís Guide - Hitech Projects

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