;Simple speech recognition
exten => 1234,1,Answer()
exten => 1234,n,agi(speech-recog.agi,en-US)
exten => 1234,n,Verbose(1,The text you just said is: ${utterance})
exten => 1234,n,Verbose(1,The probability to be right is: ${confidence})
exten => 1234,n,Hangup()

;Speech recognition demo also using googletts.agi for text to speech synthesis:
exten => 1235,1,Answer()
exten => 1235,n,agi(googletts.agi,"Say something in English, when done press the pound key.",en)
exten => 1235,n(record),agi(speech-recog.agi,en-US)
exten => 1235,n,Verbose(1,Script returned: ${confidence} , ${utterance})

;Check the probability of a successful recognition:
exten => 1235,n,GotoIf($["${confidence}" > "0.8"]?playback:retry)

;Playback the text
exten => 1235,n(playback),agi(googletts.agi,"The text you just said was...",en)
exten => 1235,n,agi(googletts.agi,"${utterance}",en)
exten => 1235,n,goto(end)

;Retry in case speech recognition wasn't successful:
exten => 1235,n(retry),agi(googletts.agi,"Can you please repeat more clearly?",en)
exten => 1235,n,goto(record)

exten => 1235,n(fail),agi(googletts.agi,"Failed to get speech data.",en)
exten => 1235,n(end),Hangup()

;Voice dialing example
exten => 1236,1,Answer()
exten => 1236,n,agi(googletts.agi,"PLease say the number you want to dial.",en)
exten => 1236,n(record),agi(speech-recog.agi,en-US)
exten => 1236,n,GotoIf($["${confidence}" > "0.8"]?success:retry)

exten => 1236,n(success),goto(${utterance},1)

exten => 1236,n(retry),agi(googletts.agi,"Can you please repeat?",en)
exten => 1236,n,goto(record)

Under the folder wolfram you can find a sample agi script that in combination with speech-recog.agi
sends queries to WolframAlpha and returs the answers as a dialplan variable. See wolfram/README for
details and dialplan examples.

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