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# DataObfuscation

The `DataObfuscation` task allows you to process training data audio files and labels in such a way that any sensitive or private information is hidden, so that the data can be used for model training.

## Parameters

Parameters | Description | Required
--- | --- | ---
Type | The task name. Set to `DataObfuscation`. | Yes
Am | The acoustic model to use for processing. | Yes
AudioAnalysisDir | The location of the audio analysis output directory. | Yes
BeamStep | The amount to increase the beam value by on a pass failure, before attempting another pass. |
DataList | A list of the files to use for processing. | Yes
Diag | Whether to generate diagnostic information. |
DiagFile | The file to write the diagnostic information to. |
DnnFile | The DNN acoustic model file to use for processing. | Yes
MaxBeam | The maximum beam value at which to attempt the adaptation pass. |
MaxOtdLen | The required maximum length of each obfuscated training data file, in seconds. |
MinBeam | The minimum beam value at which to attempt the adaptation pass. |
OtdPath | The directory to write the obfuscated training data files to. | 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
RandOtd | Whether to randomize obfuscated training data. |
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. |

## Example

`http://localhost:13000/action=AddTask&Type=DataObfuscation&Am=ver-ENUK-tel-6.2-8k.am&Pgf=ver-ENUK-tel-6.2.pgf&DnnFile=ver-ENUK-tel-6.2-8k.dnn&DataList=ListManager/ObfuscList&PlhPath=T:\data\PLH&TxtPath=T:\data\ObfuscTranscripts&OtdPath=T:\ObfuscTraining&AudioAnalysisDir=T:\AudioAnalysis`

This action uses port `13000` to instruct Speech Server, which is located on the local machine, to produce the obfuscated training data (`.otd`) file, using the `ver-ENUK-tel-6.2-8k.am` acoustic model file, the `ver-ENUK-tel-6.2.pgf` pronunciation generation file, and the set of data files specified in the `DataList` parameter to process the data. Speech Server writes the obfuscated training data files to the `ObfuscTraining` directory.

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