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# Configure Audio Preprocessing Tasks

When you configure a task that uses the `audiopreproc` module, you must use the appropriate mode for the task that you want to perform. The following modes are available:

`A` | Audio categorization.
`C` | Clipping detection and assessment.
`S` | Signal-to-noise ratio calculation.
`T` | DTMF dial tone identification.

You can use one or more of these modes in a single schema. To use multiple modes, type the letter for each mode in the schema, without spaces. For example:

    1 = w1,d <- audiopreproc(CATS,a)

This example uses all four of the `audiopreproc` module modes to analyze audio.

For examples and more information on how to configure tasks, see Sample Task Schemas.

Related Topics

- Categorize Audio
- Assess Audio Quality
- Identify DTMF Dial Tones

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