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# TelWavToText

The `TelWavToText` task converts a telephony audio file into a text transcript. In addition to transcribing speech, the task recognizes and transcribes dial tones including DTMF.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Specify `TelWavToText`. | Yes
Conf | Whether to generate word confidence scores. |
Diag | Whether to generate diagnostic information. |
DiagFile | The alignment diagnostics file to generate. |
DnnScale | The DNN output acoustic score scaling factor. |
DoDialTones | The type of dial tone to identify. |
EndTime | The end of an audio section to process. |
File | The audio file to process. | Yes
FrameDupl | An integer value which allows for greater time efficiency with only a minimal loss of recognition accuracy. |
Lang | The language pack to use. | Yes
LatFile | The name of the lattice file that contains word hypotheses. |
LatScale | The depth of the lattice. |
LatWinSize | The size (in seconds) of the lattice output window. |
LatWordFile | A list of words to find. |
Mode | The algorithm mode for the speech-to-text process. |
ModeValue | The value of the parameter associated with the speech-to-text algorithm mode. |
Out | The file to write the transcription to. | Yes
SilThresh | The threshold between what the module identifies as silence and non-silence. |
StartTime | The beginning of an audio section to process. |
SugdInputChannels | The channel layout of the input media file. |
SugdInputFrequency | The sampling rate of the input media file. |

## Example

    http://localhost:13000/action=AddTask&Type=TelWavToText&File=C:/myData/tel.wav&Out=TelTranscript.ctm&Lang=ENUS

This action uses port `13000` to instruct IDOL Speech Server, which is located on the local machine, to perform the `TelWavToText` task on the `tel.wav` file and write the results to the Tel`Transcript.ctm` file. The `tel.wav` file contains U.S. English dialect speech.

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