VoiceXML 2.1 Development Guide

| TOC

Recording Audio

The ability to record audio from the phone is a pretty powerful function to have at our disposal, so let's look into some of the intricacies of what goes on behind the scenes, and learn how to properly manage our files. Firstly, as we are dealing with multipart/form data, we must remember that we must submit our recorded data using the POST method. However, if we are really forgetful, the VWS2.0 platform will remember for us, although 1.3 is a little less forgiving. With age, comes wisdom.

When we record an audio file on the Voxeo network, we will store the file in a local temp directory, which will allow you to playback the message while still within the app. However, if you want to keep this recorded file for future use, you will have to move it somewhere before we exit from the application.

An important point to remember is that we absolutely cannot have a FTP url in the VWS environment, as the Nuance interpreter will throw an error.badfetch upon encountering one. However, we can do this by implementing some server-side code. The good news is, Voxeo has provided a number of sample scripts in a variety of server-side flavors to let you in on the necessary syntax.

Another very valid point to keep in mind if you are using ASP as a backend. When you use a submit recorded audio specifying 'multipart/form-data', all of the fields passed, even the text ones, are all contained in the binary data sent and it is up to the script page to parse it out correctly. Using a 'Request.Form' will cause an error because the text data can't be sent separately.

ASP Example

Record_One.xml

The following code prompts for a recording and submits the recorded audio along with a query string varialbe to to 'RecordMessage.asp'.



<?xml version='1.0'?>

<vxml version="2.0">



  <form id="main">

    <record name="CallersMessage" beep="true" maxtime="60s" finalsilence="2500ms" type="audio/wav">

      <prompt>

        Please record your message after the beep. You may record a message up to sixty seconds long. To end recording, 

        press  any key or simply quit speaking.

      </prompt>

    </record>



    <field name="confirmMessage" type="boolean">

      <prompt>

        I heard you say <value expr="CallersMessage"/>. To save this message say yes. To discard it say no.

      </prompt>

  

      <filled>

        <if cond="confirmMessage">

          <goto nextitem="askName"/>

        <else/>

          <goto next="#main"/>

        </if>

      </filled>

		

    </field>



    <field name="askName">

       <prompt>

        are you Jim, Jackson, or Aaron?

      </prompt>



      <grammar type="text/gsl"> [ aaron jackson jim ] </grammar>



      <filled>

        <if cond="askName == 'jim' || askName == 'jackson' || askName == 'aaron'">

            <submit expr="'RecordMessage.asp?askName='+askName" 

              method="post" namelist="CallersMessage" enctype="multipart/form-data"/>

        <else/>

          <prompt>

            sorry charlie, we will not submit your file.

          </prompt>

        </if>

      </filled>

    </field>

  </form>

</vxml>

'RecordMessage.asp

The following code saves the recorded file (with the help of upload.inc) and speaks the name sent in the query string.



<!--#include file="upload.inc"--> 

<%

	byteCount = Request.TotalBytes

	RequestBin = Request.BinaryRead(byteCount)

	Dim UploadRequest

	Set UploadRequest = CreateObject("Scripting.Dictionary")



	BuildUploadRequest  RequestBin

	picture = UploadRequest.Item("CallersMessage").Item("Value")

	Filename = DatePart ( "h" , Now ) & DatePart ( "m" , Now ) & DatePart ( "s" , Now ) & DatePart ( "m" , Now ) & DatePart ( "d" , Now ) & DatePart ( "yyyy" , Now ) & ".wav"

	Set FileSystem = CreateObject ("Scripting.FileSystemObject" )

	Set WaveFile = FileSystem.CreateTextFile ( Server.MapPath ( filename ) )

	WaveFile.Write getString(picture)

	WaveFile.Close

	Set WaveFile = Nothing

	Set FileSystem = Nothing



%><?xml version='1.0'?>

<vxml version="2.0">



  <form>

    <block>

      <prompt>

        Thanks, <% =Request.Querystring("askName")%> Your message has been saved.

      </prompt>

    </block>

  </form>

</vxml>

upload.inc

This file processes the posted content, separating the file from the query string parts.



<%

	Dim Filename

	Dim FileSystem

	Dim WaveFile

	Dim binRead

	Dim byteCount

	

'Byte string to string conversion

Function getString(StringBin)

 getString =""

 For intCount = 1 to LenB(StringBin)

    getString = getString & chr(AscB(MidB(StringBin,intCount,1))) 

 Next

End Function



'String to byte string conversion

Function getByteString(StringStr)

 For i = 1 to Len(StringStr)

 	char = Mid(StringStr,i,1)

	getByteString = getByteString & chrB(AscB(char))

 Next

End Function   



Sub BuildUploadRequest(RequestBin)



    'Get the boundary

    PosBeg = 1

    PosEnd = InstrB(PosBeg,RequestBin,getByteString(chr(13)))

    boundary = MidB(RequestBin,PosBeg,PosEnd-PosBeg)

    boundaryPos = InstrB(1,RequestBin,boundary)





    'Get all data inside the boundaries

	Do until (boundaryPos=InstrB(RequestBin,boundary & getByteString("--")))



        'Members variable of objects are put in a dictionary object

        Dim UploadControl

        Set UploadControl = CreateObject("Scripting.Dictionary")





        'Get an object name

        Pos = InstrB(BoundaryPos,RequestBin,_

                     getByteString("Content-Disposition"))

        Pos = InstrB(Pos,RequestBin,getByteString("name="))

        PosBeg = Pos+6

        PosEnd = InstrB(PosBeg,RequestBin,getByteString(chr(34)))

        Name = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))

		PosFile=InstrB(BoundaryPos,RequestBin,getByteString("filename="))

        PosBound = InstrB(PosEnd,RequestBin,boundary)

        'Test if object is of file type

        If  PosFile<>0 AND (PosFile<PosBound) Then

    	    'Get Filename, content-type and content of file

	        PosBeg = PosFile + 10

	        PosEnd = InstrB(PosBeg,RequestBin,getByteString(chr(34)))

	        FileName = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))

        	'Add filename to dictionary object

	        UploadControl.Add "FileName", FileName

	        Pos = InstrB(PosEnd,RequestBin,getByteString("Content-Type:"))

	        PosBeg = Pos+14

	        PosEnd = InstrB(PosBeg,RequestBin,getByteString(chr(13)))

	        'Add content-type to dictionary object

	        ContentType = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))

	        UploadControl.Add "ContentType",ContentType

	        'Get content of object

	        PosBeg = PosEnd+4

	        PosEnd = InstrB(PosBeg,RequestBin,boundary)-2

	        Value = MidB(RequestBin,PosBeg,PosEnd-PosBeg)

	    Else

	        'Get content of object

    	    Pos = InstrB(Pos,RequestBin,getByteString(chr(13)))

        	PosBeg = Pos+4

	        PosEnd = InstrB(PosBeg,RequestBin,boundary)-2

	        Value = getString(MidB(RequestBin,PosBeg,PosEnd-PosBeg))

    	End If

	

        'Add content to dictionary object

        UploadControl.Add "Value" , Value    

		'Add dictionary object to main dictionary

		UploadRequest.Add name, UploadControl    

        'Loop to next object

        BoundaryPos=InstrB(BoundaryPos+LenB(boundary),RequestBin,boundary)

	Loop

End Sub

%>

Cold Fusion Example 1

RecUpload.cfm

The following code handles both the recording and saving of an audio file.



<?xml version='1.0'?>

<vxml version="2.0">



<cfheader name="Cache-Control" value= "no-cache">

<cfheader name="Expires" value="#Now()#">



<CFIF IsDefined("form.greeting")>

<CFFILE Action="upload"

filefield="form.greeting"

destination="#getdirectoryfrompath(getcurrenttemplatepath())#"

mode="777"

nameconflict="makeunique">

  <form>

    <block>

      <prompt>

        We have saved this audio file to the server.

          <audio src="<CFOUTPUT>#serverfile#</CFOUTPUT>" />

        Please call back to record again.

      </prompt>

    </block>

</form>



<CFELSE>

<form>

  <record name="greeting" beep="true" maxtime="30s" finalsilence="4000ms" type="audio/wav">

    <prompt> 

      At the tone, please say your greeting.

    </prompt>



    <noinput> 

      I didn't hear anything, please try again.

    </noinput>



    <nomatch> 

      Your greeting is <value expr="greeting"/>. 

    </nomatch>

  </record>



  <field name="confirm" type="boolean">

    <prompt> 

      Your greeting is <value expr="greeting"/>.

      To keep it, say yes. To discard it, say no. 

    </prompt>



    <filled>

      <if cond="confirm">

        <submit next="RecUpload.cfm" method="post" namelist="greeting" enctype="multipart/form-data"/>

    </if>



    <clear/>

    </filled>

  </field>

</form>



</CFIF>

</vxml>

Cold Fusion Example 2

CF_Mailto.cfm

The following code handles both the recording and emailing of an audio file.



<?xml version="1.0" encoding="UTF-8"?>

<vxml version="2.0">





<CFIF IsDefined("form.greeting")>

<CFFILE Action="upload"

	filefield="form.greeting"

	destination="#getdirectoryfrompath(getcurrenttemplatepath())#"

	mode="777"

	nameconflict="makeunique">

	

	<CFMAIL TO="me@here.com"

                                FROM="you@there.com"

                            SUBJECT="WAV EMAIL TEST">

            Attached is your saved wav file.

      <CFMAILPARAM 

               FILE="#file.serverdirectory#\#file.serverfile#">

</CFMAIL>

 

<form>

  <block>

    <prompt>

      Data recieved.Thanks for recording.

    </prompt>

  </block>

</form>



<CFELSE>

<form>

  <record name="greeting" beep="true" maxtime="10s" finalsilence="4000ms" type="audio/wav">

    <prompt> 

      At the tone, please say your greeting.

    </prompt>



   <noinput> 

      I didn't hear anything, please try again.

    </noinput>

  </record>



  <field name="confirm" type="boolean">

    <prompt> 

      Your greeting is <value expr="greeting"/>. 

      Our shadow var for duration is <value expr="greeting$.duration"/>, 

      for size is <value expr="greeting$.size"/> 

      and for term character is <value expr="greeting$.termchar"/>

    </prompt>



    <prompt>  

      To keep this message, say yes. To discard it, say no. 

    </prompt>



    <filled>

      <if cond="confirm">

        <submit next="cfrecord.cfm" method="post" namelist="greeting" enctype="multipart/form-data"/>

     </if>

     <clear/>



    </filled>

  </field>

</form>



</CFIF>

</vxml>

JSP Example

record_prompt.xml

The following code submits a recording and some variables to 'record_save.jsp'.

<?xml version='1.0'?>
<vxml version="2.0">
<form>
<record name="audio" maxtime="120s" finalsilence="4s" beep="true" dtmfterm="true">
<prompt bargein="false">
Start recording after the beep. Press any dtmf key when finished.
</prompt>

<filled>
<assign name="firstname" expr="'professor'" />
<assign name="lastname" expr="'falken'" />
<submit next="record_save.jsp"
namelist="firstname lastname audio"
enctype="multipart/form-data"
method="post" />
</filled>
</record>
</form>
</vxml>

record_save.jsp

The following code saves the audio and outputs the posted variables.

<%
/*
Download the oreilly servlet classes from http://www.servlets.com/cos/index.html

The download will include several classes, however we're only going to be using
the MultipartRequest class for this example. For more flexibility/customization,
you may need to use the MultipartParser class. The oreilly download includes
sample code for both classes.
*/

boolean SUCCESS = true; //always optimistic...
String firstname = ""; //default
String lastname = ""; //default

try {
//set the destination for the recorded audio file
String dir = application.getRealPath("/audio"); //modify as necessary

//process the request object, save the audio part, parse the posted variables
com.oreilly.servlet.MultipartRequest mr = new com.oreilly.servlet.MultipartRequest(request, dir);

//assign our posted variables
firstname = mr.getParameter("firstname");
lastname = mr.getParameter("lastname");
} catch (Exception e) {
SUCCESS = false; //something went wrong.
}

//we've finished the record attempt. Output vxml with the status...
%>
<?xml version='1.0'?>
<vxml version="2.0">
<form>
<block>
Greetings,
<%
out.print(firstname + " " + lastname + ".");

if (SUCCESS)
out.print(" The save succeeded. Now, how about a nice game of chess.");
else
out.print(" Unfortunately, the save failed.");
%>
</block>
</form>
</vxml>

PHP Example

Record_Upload_HTTP_POST.php

The following catcher script illustrates how one might handle the saving of a posted file in PHP.

Note: This code is designed for php version 4.0.1, newer versions will require modification



<?PHP

header('Cache-Control: no-cache');

 

error_reporting (0);

 

echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>";

echo "<vxml version=\"2.0\">";



echo "<form id=\"main\">";

echo "<block>";

 

if ($HTTP_POST_FILES) {

  foreach ($HTTP_POST_FILES as $key => $value) {

    foreach ($value as $Filename) {

 

      if (strpos($Filename, "WINNT")) { $ServerSide = $Filename; }

      if (strpos($Filename, ".wav"))  { $ClientSide = $Filename; }

    }  // for each statement

 

    $ServerSide = str_replace("\\\\", "/", $ServerSide);

 

    if (!copy($ServerSide, "c:/audio-storage/temp.wav")) {

      echo "Could not save filename: " . $ServerSide;

    } // if statement

    else {

      echo "Successfully saved filename: " . $ServerSide;

    }  // else statement

 

  }  // for each statement

}  // if statement

 

echo "</block>";

echo "</form>";

echo "</vxml>";

?>

ANNOTATIONS: EXISTING POSTS

riyer

11/21/2005 5:34 PM (EST)

To record & store audio data, do I need to upgrade to professional evolution on voxeo?

MattHenry

11/21/2005 5:38 PM (EST)

Hello Riyer,

I'm going to take a guess on where it is that you are coming from on this inquiry. Can I assume that you are asking about the ability to use a JSP/PHP/etc script hosted on the voxeo servers that will store audio data for you?

Note that if you have a host that is JSP/ASP/etc-capable, then you should be able to run the code sample of your choice and store recorded audio without any cost at all.

~Matt

riyer

11/21/2005 5:55 PM (EST)

Thanks Matt. My host sits behind a firewall. I will dig around a little more to see how I can set this up --

symphonyx

5/10/2006 9:55 AM (EDT)

Thanks Matt.

Greetings from Chile.

Bye,

symphonyx

5/10/2006 2:41 PM (EDT)

Here the problem solved using vxml+php.

When submit a record the post to php is :

file://localhost/yourtempwavfolder/yourtempfile.wav

Is necessary "cut" the "file://localhost/" to get the correct file path.

record.vxml
<?xml version="1.0"?>
<vxml version="2.0">
<form>
<record beep="true" name="file" type="audio/x-wav" maxtime="5s"
dtmfterm="true">
<prompt>
Say something. Press any key to stop recording.
</prompt>
<noinput>
I can't heard you.
</noinput>
<filled>
<prompt>
Your message <value expr="file" />
</prompt>
<submit next="php/upload.php" method="post" namelist="file" enctype="multipart/form-data" />
</filled>
</record>
</form>
</vxml>

upload.php
<?
header('Cache-Control: no-cache');

include 'util.php';

$MAX_FILE_SIZE = 15000000;

$folder = "/tmp/";
$logfile = "log.txt";

// Post variables
$fname = $HTTP_POST_FILES['file']['name'];
$ftype = $HTTP_POST_FILES['file']['type'];
$fsize = $HTTP_POST_FILES['file']['size'];
$ftmp = $HTTP_POST_FILES['file']['tmp_name'];

//save log
$handler=fopen($folder.$logfile,"w");
fwrite($handler,the_file_name($fname));
fclose($handler);

if($fize > $MAX_FILE_SIZE){$error = 2;}

if(file_exists($folder."m_".$fname)){$error = 3;}

if(copy(the_file_name($fname),$ftmp."wav")) {$error = 0;}

switch($error){
case'0':
$mensaje="File saved Ok.";
break;
case'1':
$mensaje="Incorrect Format.";
break;
case'2':
$mensaje="File so Big.";
break;
case'3':
$mensaje="File already exists.";
break;
}

echo "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>";
echo "<vxml version=\"2.0\">";
echo "<form id=\"main\">";
echo "<block>";
echo $mensaje;
echo "</block>";
echo "</form>";
echo "</vxml>";
?>

util.php
<?php

function the_file_name($file){
$j=0;
$l=strlen($file);
for ($k=0;$k<=$l;$k++){
if (substr($file,$k,1)=='/'){
$j++;
if ($j==3){
return substr($file,$k);
}
}
}

return "";
}
?>

Greetings from Chile.

Luis

fayyazkl

2/15/2007 2:50 AM (EST)

Hi,

Can i record audio along with simultaneously playing a song to caller. If this is possible, please provide some directions to do so.

Thanks,

Fayyaz

mikethompson

2/15/2007 9:27 AM (EST)

Hi Fayyaz,

Unfortunately, this is not natively supported within VoiceXML. However, if you *really* want to achieve this functionality, you will want to use CallXML or CCXML. This way, you can create a conference and join in another CallXML leg which simply records. Then dial another seperate CallXML application (and join it into the conference) to do the audio streaming. I know it is a lot of work for something which sounds simple, but this is currently the best way to approach recording audio while streaming audio. If you want to get started with this, here are some helpful links:

http://docs.voxeo.com/callxml/2.0/t_14cxml.htm?search=conference#anchor
http://docs.voxeo.com/callxml/2.0/joinconference.htm?search=conference#anchor

Best,
Mike Thompson
Voxeo Corporation

danielvinson

2/18/2007 1:13 PM (EST)

Hiya

The ASP example seems to work when hosted on the Voxeo server. However I assume the Cold Fusion, JSP and PHP examples require specific servers. Is this correct? Can you tell me the advantage of using CF, JSP or PHP over ASP?

The CF 2 example allows the caller to send the recorded message. Is it possible to do this in XML or ASP?

Thanks

Daniel

VoxeoTony

2/18/2007 5:21 PM (EST)

Hi Daniel,

Your questions are covered in the posting at http://docs.voxeo.com/voicexml/2.0/intro_serverside.htm?search=server#anchor

However, since ASP is native to the Windows server environment the ASP example would be able to work on the hosted platform.

We hope this helps you along.

Tony~

danielvinson

2/19/2007 5:27 PM (EST)

Hi Tony

Thanks for the link. Understand a bit better now.

But using the ASP code when hosted on the Voxeo server...is this dynamic?

Sorry for repeating myself but is it possible to write the ASP code such that it will email the recorded message or is this only available in CF, JSP etc

Thanks

Daniel

VoxeoTony

2/19/2007 6:12 PM (EST)

Hello Daniel,

I'm glad you were able to get some insight to your questions. For your questions on ASP we do know that ASP as a language is very powerful. The example on the site is dynamic in the sense that it is not a static file being sent off to the application.

I do know that ASP will be able to email when properly coded. While we do not have examples for this in the tutorial, doing a search for ASP email examples should prove useful.

Please let us know if this information helps.

Regards,

Tony

fayyazkl

2/20/2007 3:04 AM (EST)

Hi Mike and others!

Thank you very much for such a prompt response and favor. I just needed some further info. If i use a conference call for achieving simultaneous playback and recording, is it possible that i be charged a single call?

Actually, i am working on an application which once go into production will obviously be charged per call through your network. However, we don't want to double that cost by making two calls per customer. Could you suggest a way out or something??

Thanking in anticipation.

Fayyaz Khan Lodhi

MattHenry

2/20/2007 2:41 PM (EST)

Fayyaz,

This is really dependent on the nature of the application you are running, the amount of traffic that you are willing to commit to, and several other factors. As this is really a question of pricing, I think it might be best to direct such inquiries to sales@voxeo.com. As each customer has their own specific needs, each customer contract is going to be a little bit different in terms of what is billed.

Hope this helps,

~Matthew henry

fayyazkl

3/7/2007 2:51 AM (EST)

Hi Mike and others,

Further to my question above i.e. i want to play a song to the caller while recording his voice simultaneously, I have learned conferencing with CCXML. But problem i am facing is, Conference is created when we call separate numbers, they are picked up by different people and we join these legs.

But here i have a single caller who calls my application, the application picks up, and records his voice. If i want to play him a song while doing this, how would i call him in the middle of his running call?

May be i have missed a point or have not explained my needs to you clearly. Please advise.

Fayyaz Khan Lodhi

MattHenry

3/7/2007 4:07 PM (EST)

To be clear:

You have an app outdial app that, upon pickup by only a single party, will play a .wav file, and record the caller input, is this correct? If this is the case, then I would think that using a code structure with block/audio would serve to address the first part of the equation, and the <voxeo:recordcall> element would allow you to record both sides of the call.

Is this what you are looking for? The finer details aren't very clear to me, so please forgive me if this is off-topic.

~Matt

fayyazkl

3/8/2007 1:57 AM (EST)

Dear Matt,

You almost understood correctly but missed one part i guess so i will elborate once to be clear.

A user calls my in bound application i.e. he has the number attached to my application and he makes a call through normal phone. Upon picking the call, the application starts playing a song to him. During this play back he starts singing as well. And i want to record ONLY HIS SINGING and not the song played by application. Moreover, these two things i need to take place at the same time.

From what you suggested, if i play with block/audio and then use voxeo :recordcall, recording will start AFTER the song being played is completed i.e. the playing and recording wont occur in parallel. Whereas my needs are to get both the functionalities done in parallel.

Hope i have clarified my query. Hoping for a solution.Thanks

Fayyaz

MattHenry

3/8/2007 3:10 PM (EST)

Hello Fayyaz,

This might be a bit tricky. There aren't any provisions within the VXML specification for simultaneous recording and input, where we can block out one of the audio streams, (a half-duplex connection). You *might* be able to figure a way to do this via a CCXML wrapper that <joins> two seperate legs, (one full duplex, the other half-duplex), but then we have the problem of how to disambiguate the prerecorded audio, and the callers voice input into the recorded file that you wish to generate.

Much as I hate to say it, I'm not seeing a really easy way around this, as this is somewhat outside the boundaries of what VoiceXML is really designed to do.

Regards,

~Matthew henry

kubeworks

3/22/2007 12:55 AM (EDT)

when i try the CF2 example i get an error. I tried changing the cfrecord.cfm to the same name as my file and it gives me server as internal error.

Is there really a seperate CF script to be able to successfully do this test on CF?

jbassett

3/22/2007 6:44 AM (EDT)

Hello,

The tutorial is for the recording and email of a file and should work by itself. If you feel there is something wrong, feel free to log in to your account and open a support forum ticket and wwe will be glad to assist you.

You can also use the "Support" tab in the Debugger window to email us the logs from a failed session. This will give us a much better base of information to troubleshoot with, ultimately shortening the time to resolution.

Thanks
Jesse Bassett
Voxeo Support

georgelai

8/26/2007 6:26 AM (EDT)

I have tried and tried the php post script, and your php example fails every time, with the message: Could not save filename: file-1188123569661.wav

I even tried to change the { $ClientSide = $Filename; } to { $ServerSide = $Filename; } because the code was recognizing only ".wav" but it still failed to save.

What is going on? From putting in the php code:

echo "<log expr=\"'".$Filename."'\" />";

I see the following:

LOG: file-1188123569661.wav
LOG: audio/x-wav
LOG: /tmp/phplVRimF
LOG: 0
LOG: 27134

Help, please! This is driving me crazy!

MattHenry

8/27/2007 3:31 PM (EDT)

George,

To be clear, *which* PHP code are you using? Is it the PHP in our tutorial, or the code posted by username "symphonyx" on 5/10/2006 2:41 PM (EDT)? Note that we aren't habit of providing dynamic coding support, but if you can provide us with some indication as to what is failing, and how, perhaps I can lend a hand.

~Matt

rastgoo

5/16/2008 1:34 PM (EDT)

Hi
I was looking at w3
And here is what I have saw in definition of record tag

"Platform support for recognition of speech grammars during recording is optional."

Essentially this is exactly what we need to do.
according to specification if input phrase match local grammer we should be able to get the interpretation thourgh application.lastapplication.lastresult$

Her is the link to specification
http://www.w3.org/TR/voicexml20/#dml2.3.6

Also some platform supports the same functionality through <field> tag and using shadow vaiables.

Also consider that <record> tag can have a child tag of <grammar> so look like there has to be some recognition functionality available via record rag.

Sincerely

rastgoo

5/16/2008 1:36 PM (EDT)

I forgot to mentioned that all of my test have failed till now.
here is the sample code which I tried to use

<?xml version="1.0"?>
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml">
<form>
<script>
<![CDATA[
function dumpResults(){
var result = "something";
for ( var i = 0; i < application.lastresult$.length; i++ ){
result += "Utterance is "+application.lastresult$.utterance + ".";
result += "Utterance is "+application.lastresult$.interpretation+ ".";
}
return result;
}
function dumpResults2(){
var result = application.lastresult$.length;
return result;
}
]]>
</script>
<record name = "digit">

<grammar src="builtin:grammar/digits"/>

<prompt bargein="true">
<audio src="/vxml/audio/FD4945.VOX" fetchhint="prefetch"/>
</prompt>
<noinput>
<audio src="/vxml/audio/FD4943.VOX" fetchhint="prefetch"/>
</noinput>
<nomatch>
<audio src="/vxml/audio/FD4945.VOX" fetchhint="prefetch"/>
</nomatch>
<filled>
<log >++++++++++++++++++++++<value expr = "dumpResults()" /></log>
<audio src="/vxml/audio/FD4941.VOX" fetchhint="prefetch"/>

</filled>
</record>

</form>
</vxml>

I appriciate any help on this regard.

VoxeoDustin

5/27/2008 2:58 PM (EDT)

Hey Rastgoo,

You are correct. I have reproduced this behavior and it does not agree with the spec. I have opened an internal Engineering ticket to address this issue and it will be resolved in a future build of Prophecy.

Cheers,
Dustin

fahdbaig

6/25/2008 6:11 AM (EDT)

Hi,

I was wondering if its possible to record the speech in say 2 seconds chunks as the caller speaks? In other words, as the speaker is speaking every 2 seconds his/her speech is recorded as a WAV file. I'll have another application that will be taking in these WAV files, as they are recorded, and process them.
Can you guide me on how to do this.

Thank you very much.
Fahd

VoxeoDustin

6/25/2008 9:30 AM (EDT)

Hey Fahd,

Unfortunately, the VoiceXML spec does not provision for the ability to split the audio files into 2 second pieces. This is something that would need to be handled with post processing on the server side.

Let me know if we can be of further assistance.

Thanks,
Dustin

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