<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
  
    
  
  <div text="#000000" bgcolor="#FFFFFF">
      <br>
      After some more tests, I found followings:<br>
    <br>
      1. Testing from dialplan, the log output is the string of &quot;CRIT
    ${speech_detect_result}&quot; rather than the recognition results.<br></div></blockquote><div><br>  oops <br> <br></div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div text="#000000" bgcolor="#FFFFFF">
    <br>
      2. Regarding to non barge in, I first send &quot;speak&quot; command then
    send play_and_detect_speech with parameter:<br>
          detect:unimrcp:nuance5-mrcp1-1
{start-input-timers=false,no-input-timeout=25000,recognition-timeout=25000}dudeYNNC_Nuance<br>
    <br>
          in which I removed the &quot;say:&quot; part.<br>
          <br>
          But very soon I received event CHANNEL_EXECUTE_COMPLETE for
    play_and_detect_speech before the text playing finishes,<br>
          and speech_detect_result is null (actually the event header
    does not contain this variable)<br>
    <br>
          I tried with &quot;say:&quot; part with empty text like
    &quot;say:unimrcp:en-GB: &quot; but it doesn&#39;t work, see issue 3 below.<br></div></blockquote><div><br>Try with silence as I originally suggested:<br><br>silence_stream://1000 detect:unimrcp:nuance5-mrcp1-1 {start-input-timers=false,no-input-timeout=25000, recognition-timeout=25000}dudeYNNC_Nuance <br>
</div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div text="#000000" bgcolor="#FFFFFF">
    <br>
      3. It seems that I can not send &quot;speak&quot; command twice before the
    first one finishes. In my case I run one port TTS server on one
    machine.<br>
    <br>
         If I send the command twice FS will give me Synthesizer
    Error/Invalid TTS Module.<br>
         I thought the TTS request would be queued rather than it
    immediately looks for the TTS resource.<br>
    <br>
         If I send the second command to another TTS machine, no error
    occurs but I can only hear one utterance being spoken,<br>
         it looks like one utteraance was dropped somehow.<br><div class="im"></div></div></blockquote><div><br>Wait for speak to finish before starting a new one.<br> </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div text="#000000" bgcolor="#FFFFFF"><div class="im">
    <br>
    On 16/11/11 16:51, xl127 wrote:
    </div><blockquote type="cite"><div class="im">
      
      Hi Christopher,<br>
      <br>
      The questions are cleared to me now. Many thanks for your
      explanations!<br>
      <br>
      Best regards,<br>
      <br>
      Xing<br>
      <br>
      <br>
      On 16/11/11 15:52, Christopher Rienzo wrote:
      </div><blockquote type="cite"><br>
        Responses inline<br>
        <br>
        <br>
        <div class="gmail_quote">
          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF"><div class="im"> Now it works in my
              ESL app though I am just able to do one dialogue ( I need
              to add the event catching for furthur dialgoues).<br>
              <br>
              I have a couple of questions here:<br>
              <br>
                1. In the first try, my Nuance server was able to be
              accessed somehow (FS says the MRCP is not responding in
              5000ms, <br></div>
                  something like that), then FS says: [WARNING]
              rtsp_client.c:386 () Failed to Connect to RTSP Server <a href="http://99.185.85.31:554" target="_blank"><font color="red"><b>MailScanner has detected a possible fraud attempt from &quot;99.185.85.31:554&quot; claiming to be</b></font> <font color="red"><b>MailScanner
                    warning: numerical links are often malicious:</b></font>
                99.185.85.31:554</a>,<div class="im"><br>
                  later FS says: <br>
                   [ERR] mod_unimrcp.c:1860 (TTS-6) SYNTHESIZER channel
              error!<br>
                   [ERR] switch_ivr_play_say.c:2439 Invalid TTS module! 
              <br>
                  <br>
                 The SYNTHESIZER channel error and Invalid TTS module
              error are obvious.<br>
              <br></div>
                  What I don&#39;t understand is why it went to this stange
              address: <a href="http://99.185.85.31:554" target="_blank"><font color="red"><b>MailScanner has detected a possible fraud attempt from &quot;99.185.85.31:554&quot; claiming to be</b></font> <font color="red"><b>MailScanner warning: numerical links
                    are often malicious:</b></font> 99.185.85.31:554</a>?<br>
            </div>
          </blockquote><div><div class="h5">
          <div><br>
            check your unimrcp configuration.  Make sure the default TTS
            and ASR profiles are set to actual servers.<br>
             </div>
          <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF">   2. I specified TTS
              engine in play_and_detect_speech as<br>
                       &quot;say:unimrcp:nuance5-mrcp1-1: the text to speak&quot;<br>
                   It works though I didn&#39;t specify the TTS voice.<br>
              <br>
                   How do I specify the TTS voice? In the mrcp profile
              (how?)? or something like:<br>
                       &quot;say:unimrcp:nuance5-mrcp1-1:Serena: the text to
              speak&quot; (this seems not right.)<br>
            </div>
          </blockquote>
          <div><br>
            That won&#39;t work.  Set the tts_engine variable as I explained
            previously, or use say:unimrcp:voice:text to speak with the
            desired voice and the correct default TTS profile defined in
            unimrcp.conf.xml.  This is a limitation of the say:
            notation.  Alternatively, the voice can be defined with the
            tts_voice channel variable.<br>
            <br>
             </div>
          <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF">   3. The barge-in
              works well, thanks!. Is the barge-in configurable? In some
              scenarios, we might not allow barge-in.<br>
            </div>
          </blockquote>
          <div><br>
            If you don&#39;t want to barge in, just do &quot;playback (or speak)&quot;
            first, then &quot;play_and_detect_speech&quot; with a silence prompt.<br>
             </div>
          <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF"> <br>
                4. How could I get the text which has spoken to the user
              when barge-in occurs?<br>
                   Or Could I get the time when barge-in occurs? If I
              know the barge-in time and rough totale time for the whole
              text<br>
                   to be spoken I can figure out the spoken text by
              manually checking the recorded audio file later, which
              would be painful.<br>
            </div>
          </blockquote>
          <div><br>
            If this is necessary, you might want to use the lower-level
            functions instead to watch for the begin-speaking event.<br>
             </div>
          <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF"> <br>
                5. when I use &quot;speak&quot; and &quot;detect_speech&quot; apps in ESL, I
              can catch event: DETECTED_SPEECH and speech-type:
              begin-speaking<br>
                   and &quot;detected-speech&quot;, then I do the recognition
              results processing.<br>
                   <br>
                  The new app play_and_detect_speech seems not generate
              these events any more. The way that I can think of to get
              the results<br>
                  is to catch event:CHANNEL_EXECUTE_COMPLETE then check
              if variable_current_application=play_and_detect_speech,
              then get<br>
                  the results from variable_detect_speech_result.<br>
              <br>
                  Is this the proper way to get the results in ESL app?
              Or will play_and_detect_speech later on be consistent with
              detect_speech <br>
                  in term of ASR events?<br>
            </div>
          </blockquote>
          <div><br>
            play_and_detect_speech is a higher level abstraction to
            simplify things.  If you want to have more control, go back
            to using the ESL events.  Reading the code in mod_dptools
            and switch_ivr_async will give you hints about how to do it
            correctly.<br>
             </div>
          <blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
            <div text="#000000" bgcolor="#FFFFFF"> <br>
                6. I&#39;d like to set start-input-timers=false in the
              initial request then start the recognition timers
              (start-input-timers=true)<br>
                   after the TTS finishes.<br>
                   How possibly could I do this?<br>
            </div>
          </blockquote>
          <div><br>
            This is automatically done in the 
            switch_ivr_play_and_detect_speech() function.  You just need
            to specify start-input-timers=false in the beginning.<br>
          </div>
        </div></div></div><div><div class="h5">
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