Media Server 25.3
Media Server Help

# LoadSpeechLanguageResource

Loads a language resource so that it is ready when you want to start processing.

Ensure that the model version, language pack, custom language models and interpolation weights, and custom word database that you specify in this action match the configuration of your speech-to-text task exactly.

TIP: Media Server automatically loads any resources that are needed to run speech-to-text, but you can load resources before sending a `process` action, so that processing can begin without delay.

Language resources that you load remain in memory until you unload them with the action UnloadSpeechLanguageResource, or until Media Server is stopped. To automatically load language resources when Media Server starts, use the configuration parameter SpeechLanguageResources in the `[PersistentData]` section of the configuration file.

Type: asynchronous

Parameter | Description | Required
--- | --- | ---
`LanguagePack` | The language pack to load. | Yes
`CustomLanguageModel` | A comma-separated list of language models, with interpolation weights, to supplement the language pack. Separate keys from values with a colon (`:`). Any language models you specify must have been trained with the same language pack specified by the `LanguagePack` parameter. Custom language models are supported only for legacy speech-to-text models (`ModelVersion=legacy`). | No
`CustomWordDatabase` | The name of a custom word database to use to supplement the language pack. Custom word databases are supported only for legacy speech-to-text models (`ModelVersion=legacy`). | No
`GPUDeviceID` | The device ID of the GPU to use, if you have enabled GPU acceleration and want to override the value of the GPUDeviceID configuration parameter. You can also set this parameter to `CPU`, to disable GPU acceleration for this action and use the CPU instead. | No
`ModelVersion` | The model to use to convert speech into text (default `legacy`). This corresponds to the value of the ModelVersion parameter in your speech-to-text task. | No

## Example

The following action loads a language resource for speech-to-text with the out-of-the-box ENUK language pack and the `small` speech-to-text model:

    /action=LoadSpeechLanguageResource&LanguagePack=ENUK&ModelVersion=small

The following action loads a language resource that combines a custom language model with the standard ENUK language pack and the `legacy` speech to text model. The custom language model is loaded with an interpolation weight of `0.1`:

    /action=LoadSpeechLanguageResource&LanguagePack=ENUK
                                      &CustomLanguageModel=MedicalTerms:0.1

## Response

This action is asynchronous, so Media Server always returns success accompanied by a token. You can use the token with the QueueInfo action to retrieve the status of the action:

    <autnresponse>
      <action>QUEUEINFO</action>
      <response>SUCCESS</response>
      <responsedata>
        <actions>
          <action>
            <status>Finished</status>
            <queued_time>2018-May-17 08:07:11</queued_time>
            <time_in_queue>0</time_in_queue>
            <process_start_time>2018-May-17 08:07:11</process_start_time>
            <time_processing>15</time_processing>
            <process_end_time>2018-May-17 08:07:26</process_end_time>
            <identifier>66e2899a64a21cef</identifier>
            <token>...</token>
          </action>
        </actions>
      </responsedata>
    </autnresponse>

The response includes an `identifier` which you can use with the action UnloadSpeechLanguageResource, should you want to unload the resource.

## See Also

To list the language resources that you have loaded, use the action ListSpeechLanguageResources.

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Version 25.3 | Last updated July 2025

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Product: Knowledge Discovery Media Server 25.3

Topic Title: LoadSpeechLanguageResource