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# IvSpkIdDevel

The `IvSpkIdDevel` task processes one or more speaker ID feature files (generated by the IvSpkIdFeaturetask) to generate scores for tuning iVector-based score thresholds.

You can use one or more input files, against one or more model files. You can use this task either to generate a single iVector development score file (`.ivd`), or to append the information to an existing `.ivd` file.

For more information on development score files, see the IDOL Speech Server Administration Guide.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Set to `IvSpkIdDevel`. | Yes
Append | Whether to append speaker scores for each audio file to a common `.ivd` file. |
DataExt | The file extension to use for the input list of feature files. |
DataFile | A feature file. | Yes, if `DataList` is not set
DataLabel | The name of the speaker that the audio is associated with. | Yes, if `DataFile` is set
DataList | A list of feature files. |
DataPath | The path to the directory containing the feature files. |
DevFile | The name of the iVector development score file. | Yes
DiagFile | The file to write the diagnostic information to. |
DiagLevel | The level of detail to include in the diagnostic information. |
LabExt | The file extension to use for label files. | Yes, if you have enabled labeling and your files have an extension other than the default (`.lab`)
LabFile | A single label file to use. |
LabPath | The path to the label files. | Yes, if you have enabled labeling, are specifying a list of multiple files to use, and the label files are not in the default location (the `Temp` directory)
LabType | The type of labels to use. |
MinLen | The minimum length of an audio segment. |
Sfreq | The sample frequency of the audio file to process. |
TemplateExt | The file extension to use for template files. |
TemplateFile | A single speaker template file to use to generate scores. | See Comments
TemplateList | A list file that lists the speaker template files to use to generate scores. | See Comments
TemplateName | The name associated with the template file. | See Comments
TemplatePath | The path to the directory that contains the template files. | See Comments
Win | The size of each audio segment. |

## Comments

You must also set one of the following parameter combinations:

- TemplateList

  In this case, if your templates are not in the default location (the SpeakerIDDir directory), you must also set TemplatePath.

- TemplateFile and TemplateName

## Example

    http://localhost:15000/a=AddTask&Type=IvSpkIdDevel&DataFile=Brown.atv&DataLabel=Brown&TemplateList=Listmanager\speakers&DevFile=Brown.ivd

This action writes scores for all templates generated by using the `Brown.atv` feature file (which contains features based on speech for `Brown`) into a development file called `Brown.ivd`.

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