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# IvSpkIdDevelAudio

The `IvSpkIdDevelAudio` task processes an audio file or stream to generate scores for tuning iVector thresholds. The task generates a single iVector development score file (`.ivd`). You can append the scores to an existing `.ivd` file.

You can score the audio against one or more iVector template files (`.iv`).

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

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Set to `IvSpkIdDevelAudio`. | Yes
Append | Whether to append speaker scores for each audio file to a common `.ivd` file. |
AudioUpsampling | Whether to allow audio upsampling if the input audio has a sample rate too low for the task. |
DataLabel | The name of the speaker that the audio is associated with. | Yes
DevFile | The name of the audio template development file. | Yes
DiagFile | The file to write the diagnostic information to. |
DiagLevel | The level of detail to include in the diagnostic information. |
EndTime | The end of an audio section to process. |
File | The audio file that contains the speaker example speech. | Yes, if InputType is `File`.
FrameDupl | The balance between performance and speed for audio preprocessing DNN classification. |
InputType | The type of audio to process (file, binary data, or stream). |
LabFile | A single label file to use. |
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. |
StartTime | The beginning of an audio section to process. |
SugdInputChannels | The channel layout of the input media file. This parameter does not apply when InputType is `Stream`. |
SugdInputFrequency | The sampling rate of the input media file. This parameter does not apply when InputType is `Stream`. |
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 set one of the following parameter combinations:

- TemplateList
- TemplateFile and TemplateName

If you set TemplateList, and your templates are not in the default location (the SpeakerIDDir directory), you must also set TemplatePath.

## Examples

    http://localhost:15000/action=AddTask&Type=IvSpkIdDevelAudio&InputType=File&File=C:/Data/BrownSpeech4.wav&Label=Brown&TemplateList=ListManager/speakers&DevFile=speakers.ivd

This action generates match statistics for the speaker named `Brown` by checking the example speech in `BrownSpeech4.wav` against the speaker templates specified in the speakers list, and writes the results to the `speakers.ivd` development file.

    http://localhost:15000/action=AddTask&Type=IvSpkIdDevelAudio&InputType=Stream&DataLabel=Brown&TemplateList=ListManager/speakers&DevFile=speakers.ivd

This action creates the `Brown.ivd` template file for the audio stream.

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