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# AmTrain

The `AmTrain` task presents training audio and transcription data to the acoustic model training process to create accumulator files. The AmTrainFinal task uses these accumulator files to produce a final adapted acoustic model.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Set to `AmTrain`. | Yes
AdaptSil | Whether to adapt the silence model. |
Am | The acoustic model to adapt. | Yes
BeamStep | The amount to increase the beam value by on a pass failure, before attempting another pass. |
DataList | A list of the adaptation files. | Yes
Diag | Whether to generate diagnostic information. |
DiagFile | The file to write the diagnostic information to. |
Junk | Whether to identify words in the adaptation data with poor alignment scores as junk. |
JunkThresh | The alignment score threshold. Word alignments scoring above this value are labeled as junk. |
MaxBeam | The maximum beam value at which to attempt the adaptation pass. |
MinBeam | The minimum beam value at which to attempt the adaptation pass. |
MLLRMaxMins | Whether to use standard acoustic adaptation or rapid adaptation mode. |
MLLRMinOcc | When the `AmTrain` task runs in rapid adaptation mode, the minimum number of times that a basic phoneme (for example, ‘d’) must occur in the adaptation data before an individual phoneme transform can be used for adaptation. |
Out | The name of the adaptation accumulator (.acc) file to produce. | Yes
OutLabExt | The label file extension. |
OutLabPath | The directory to write label files to. By default, IDOL Speech Server writes the files to the configured temp directory. |
Pgf | The pronunciation generation (.pgf) file included in the language pack. | Yes
PlhExt | The file extension of the input audio feature files. |
PlhPath | The path to the directory containing the acoustic feature (.plh) files specified in the DataList. | Yes
RelaxRestrain | Relaxes time restraints by a specified number of frames. |
Restrain | Whether to apply time constraints to the locations of the words in audio during processing. |
SilRestrain | Whether to apply time constraints to the locations of silence in audio during processing. |
TxtExt | The file extension of the input transcription files. |
TxtPath | The path to the directory containing the transcript (.ctm) files specified in the DataList. | Yes
WriteOutLabs | Whether to create label files. |
ZeroDurWords | Whether to label zero-duration words as junk. |

## Example

    http://localhost:13000/action=AddTask&Type=AmTrain&Am=C:\LP\ENUK\ver-ENUK-5.0-16k.am&Pgf=C:\LP\ENUK\ver-ENUK-5.0.pgf&DataList=ListManager/OptList&PlhPath=C:\data\PLH&TxtPath=C:\data\transcripts&Out=AmAcc.acc

This action uses port `13000` to instruct IDOL Speech Server, which is located on the local machine, to produce the `AmAcc` accumulator file using the `ver-ENUK-5.0-16k` acoustic model, `ver-ENUK-5.0` pronunciation generation file, audio feature files stored in `C:\data\PLH`, and transcription files stored in `C:\data\transcripts`.

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