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# Configure Language Identification Tasks

To perform language identification tasks, IDOL Speech Server requires files from the Language ID resource pack. There are two versions of the pack available:

- Language ID. Use this pack to process 16 kHz data. The pack contains two component packs:

  - Base classifier pack. Contains pretrained language classifiers for 20 languages.
  - SYLS language pack. Contains files required to create language identification feature files.
- Language ID Telephony. Use this pack to process 8 kHz data. It contains an SYLS language pack required to create language identification feature files. A base classifier pack is not available for telephony data.

Download the packs from the Micro Focus Download Center.

The Language ID pack is configured in the `[SYLS]` section of the configuration file. Before you run language identification tasks, ensure that the settings are correct in this section. For more information about how to configure language packs, see Configure Language Packs.

For language identification and language pack optimization tasks, you can specify a subset of language classifiers to use from the base classifier pack. Use the `LangList` configuration parameter in the `langid` or `lidoptimizer` modules to specify the languages.

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