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# Audio Preprocessor Modes

The audio preprocessor is available as the `audiopreproc` module, which can run in different modes. These modes provide:

- Audio categorization
- Clipping detection and assessment
- SNR calculation
- DTMF dial tone identification

When you use this module in a task, you must use the appropriate module mode for the task that you want to perform. For more information about the modes, see the HPE IDOL Speech Server Reference.

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