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# Create a Speaker Template from Multiple Feature Files

A two-step process allows you to perform speaker training with multiple audio files:

1. Create a set of Speaker ID feature files by using the `IvSpkIdFeature` task (see Create Speaker ID Feature Files for more information).
2. Use these feature files to create the speaker template file.

Assuming you have already created a set of feature files, you can train the new speaker template from this set by using the `IvSpkIdTrain` task.

First you must create a list file that contains a list of all the feature files. You can do this manually, or by using the List Manager.

Each element of the list should be the file name relative to the Speaker ID directory, and must include the file extension.

For example:

    BrownSpeech1.ivp
    BrownSpeech2.ivp
    BrownSpeech3.ivp
    BrownSpeech4.ivp

NOTE:

If the files are not stored in the Speaker ID directory, you can use the `DataPath` parameter to specify the location.

For more information about IDOL Speech Server's list manager, see Create and Manage Lists.

After you have created the list, send an `AddTask` action to IDOL Speech Server, and set the following parameters:

`Type` | The task name. Set to `IvSpkIdTrain`.
`DataList` | A list file that lists the feature files to use.
`Out` | The name of the speaker template file to create.

For example:

`http://localhost:15000/action=AddTask&Type=IvSpkIdTrain&DataList=ListManager/BrownList&Out=Brown.iv`

This action uses port `15000` to instruct IDOL Speech Server, which is located on the local machine, to create the `Brown.iv` template using the feature files listed in the `BrownList` list file.

You can set additional parameters. For details of the optional parameters, see the IDOL Speech Server Reference.

This action returns a token. You can use the token to:

- Check the task status. See Check the Status of a Task.
- Retrieve the speaker template file.

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