# MatchWordsAddUnknown

Specifies whether to add any unknown MatchWords to the language resource. (Speech-to-text cannot detect unknown words).

If any of the MatchWords are unknown and this parameter is set to `TRUE`, Media Server creates a new language resource for the duration of the process action. This allows the word(s) to be recognized, but can increase memory use and delay the start of the task.

TIP: To check whether words are in the vocabulary (produced from a combination of a base language pack and an optional custom language model), you can use the action QuerySpeechLanguageModel. If one of your MatchWords is unknown, you can train a custom language model, build a custom word dictionary, or set this parameter to `TRUE`. For more information about custom language models and custom word dictionaries, refer to the Media Server Administration Guide.

Type: | Boolean
Default: | False
Required: | No
Configuration Section: | TaskName
Example: | `MatchWordsAddUnknown=TRUE`
See Also: | MatchWords

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