legacy:speech_recognition_guide:lumenvox_asr:start [Voximal documentation]

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====== Lumenvox ASR ======

===== About =====

LumenVox LLC\\
3615 Kearny Villa Road #202\\
San Diego, CA 92123\\
USA

Website: __[[http://www.lumenvox.com__|http://www.lumenvox.com]]__

===== Definition =====

The LumenVox Speech Engine is the only speech software that is directly programmed to work with the connector bridge and will allow your Asterisk applications to accept input via a caller's voice.  LumenVox supports US, UK and Australian English, Mexican and South American Spanish, and Canadian French.

===== Languages =====

English (UK, US) · French (FR, Canadian) · Spanish (North America)

===== Installation =====

Before configuring speech recognition for the VoiceXML browser, install the LumenVox Speech Engine. Complete instructions for downloading and installing LumenVox on Asterisk can be found here: [[http://www.lumenvox.com/help/speechEngineAsterisk/index.htm|http://www.lumenvox.com/help/speechEngineAsterisk/index.htm]].

Following are the main steps for a Debian distribution installation:

Add in /etc/apt/sources.list

<code>
deb http://www.lumenvox.com/packages/Debian binary/
</code>

Install the following packages:

<code>
apt-get install lumenvoxcore
apt-get install lumenvoxclient
apt-get install lumenvoxsre
apt-get install lumenvoxlicenseserver
</code>

Start LumenVox deamons.

<code>
/etc/init.d/lvlicensed start
/etc/init.d/lvsred start
</code>

Generate the Server ID File.

<code>
/usr/bin/lv_license_manager -g /root/Info.bts
</code>

Upload it in the LumenVox server with your account, and download the license.

Install the license.

<code>
/usr/bin/lv_license_manager –m /root/Licensexxxx_xx.bts
</code>

Download and install the Asterisk 1.4 connector bridge (tar.gz).

<code>
cp res_speech_lumenvox.so /usr/lib/asterisk/modules/
cp lumenvox.conf /etc/asterisk/
</code>

Lastly, restart Asterisk.

===== Configuration =====

To enable speech recognition, change the main speech parameter.

The “speech” parameter can get three values, “yes”, “automatic”, “no” or “emulation” (don’t generate errors if you enable speech grammars).

<code>
[general]
…
speech=automatic
speechprovider=lumenvox
…
</code>

\\
You can specify the path directory where the built in grammars are stored with the “speechdirectory” parameter. The default value is “/opt/lumenvox/engine/vxi/%s/%s.gram.”

With the %s markers you can specify two parameters:

<code>
//* // Language parameters (examples: “es-ES” or “en-UK”)
//* // Grammar name type, from the field attribute, “type” (examples: “digits”, “number”)

[general]
…
speechdirectory=/opt/lumenvox/engine/vxi/%s/%s.gram
…
</code>

\\
In the VoiceXML browser configuration file :

<code>
############################
# ASR server configuration #
############################

client.rec.resource.0.cacheDir VXIString /tmp/cacheContent
client.rec.resource.0.format VXIString grxml
</code>

\\
You should create the grammar files or create symbolic links to the default grammars installed with the LumenVox package.

<code>
cd /opt/lumenvox/engine
mkdir vxi
cd vxi
mkdir en-UK
ln -s ../../Lang/BuiltinGrammars/ABNFNumber.gram number.gram
ln -s ../../Lang/BuiltinGrammars/ABNFDigits.gram digits.gram
ln -s ../../Lang/BuiltinGrammars/ABNFPhone.gram phone.gram
</code>

\\
The following VoiceXML example uses the speech recognition, with the built in grammar, ‘digits.’

<code>
<?xml version="1.0" encoding="iso-8859-1"?>
<vxml version="2.0" xmlns="http://www.w3.org/2001/vxml" xml:lang="en-UK">
 <form>
  <property name="inputmodes" value="voice"/>
  <property name="timeout" value="30s"/>
  <field name="text" type="digits">
   <catch event="noinput nomatch">
    <reprompt/>
   </catch>
   <prompt>
    Speak to me:
   </prompt>
  </field>
  <filled>
   <prompt>
    You say me:
    <value expr="text" />
   </prompt>
   <clear namelist="text" />
  </filled>
 </form>
</vxml>
</code>

===== Release Notes =====
To enable dynamic grammars you need to configure the Vxi VoiceXML browser to generate temporary grammar files (look at our Vxi Developer Guide).