Testing the Installation

In our Linux packages, there's an application called SimpleSREClient that tests to make sure that the software has been installed and licensed properly. The program takes a predefined grammar and audio utterance and passes them to the Engine to get a decode.

To build run the program:

Navigate to the examples directory inside the Engine installation directory. By default it is /usr/share/doc/lumenvox/client/examples/
Run the program called SimpleSREClient and uses the following parameters:

<grammar-label> = 1
<grammar-file> = ABNFDigits.gram
<sound-format> = 3
<audio-file> = 8587070707.pcm
<server-ip> = 127.0.0.1

To test an installation on the local machine you would type: ./SimpleSREClient 1 ABNFDigits.gram 2 8587070707.pcm 127.0.0.1
The program should then decode the audio file, and output any alternative decodes (nBest results), along with their interpretation info, including input sentence, interpretation string and interpretation score:

Loaded Grammar!
Loaded Audio!
Decode returned!
Alternative 1:
Interpretation 1 of 1:
    Grammar Label        : 1
    Input Sentence       : EIGHT FIVE EIGHT SEVEN O SEVEN O SEVEN O SEVEN
    Interpretation String: 8587070707
    Interpretation Score : 918
Alternative 2:
Interpretation 1 of 1:
    Grammar Label        : 1
    Input Sentence       : EIGHT FIVE EIGHT SEVEN O SEVEN O SEVEN O SEVEN EIGHT
    Interpretation String: 85870707078
    Interpretation Score : 914
Alternative 3:
Interpretation 1 of 1:
    Grammar Label        : 1
    Input Sentence       : EIGHT FIVE EIGHT SEVEN O SEVEN O SEVEN O SEVEN TWO
    Interpretation String: 85870707072
    Interpretation Score : 909

Testing the LumenVox-Asterisk Connection

Once you have verified that the Speech Engine is running correctly, you can ensure the LumenVox-Asterisk connection is successful by running a simple speech recognition application. The following Dial Plan* context will allow you to call in to your machine and say "Yes" or "No" at the beep and get a recognition, returned as either "true" or "false." You will need to have the Asterisk console open and have its verbosity set to at least 1 in order to see the results.

			[lumenvox-test]

			exten => s,1,Answer

			exten => s,n,Wait(1)

			exten => s,n,SpeechCreate

			exten => s,n,SpeechLoadGrammar(yesno,/etc/lumenvox/Lang/BuiltinGrammars/ABNFBoolean.gram)

			exten => s,n,SpeechActivateGrammar(yesno)

			exten => s,n,SpeechBackground(beep)

			exten => s,n,Verbose(1,Result was ${SPEECH_TEXT(0)})

			exten => s,n,Verbose(1,Confidence was ${SPEECH_SCORE(0)})

*This Dial Plan uses the syntax of Asterisk version 1.6 and later. In versions 1.4 and earlier, the arguments inside the parentheses are separated by the pipe character ( | ). In version 1.6 and later a comma ( , ) is used.

Current Issues

Please see our Known Issues page for known issues with the LumenVox-Asterisk integration.

Developing Your Own Applications

Once you have the installation working, see Getting Started for basic information on developing Asterisk speech recognition applications.