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# Run Audio Analysis

As an alternative to using the different individual audio preprocessing options, you can use the `audioAnalysis` task to combine a number of the key audio preprocessing tasks that are supported by the `audiopreproc` module in a single task. The `audioAnalysis` task includes the following functions:

- Audio classification, as provided in the `speechSilClassification` task. DTMF and dial tones can optionally be included in the output, by using the `DoToneClass` parameter.
- Overall and segmented signal-to-noise ratio (SNR), as provided in the `SNRCalculation` task.
- Clipping detection, as provided in the `ClippingDetection` task.
- Audio quality summary, which is unique to the `AudioAnalysis` task.

To run audio analysis

- Send an `AddTask` action to IDOL Speech Server, and set the following parameters:

  File | The audio file to process.
  Out | The XML file to write the audio analysis summary results to.

For example:

    http://localhost:15000/action=AddTask&Type=AudioAnalysis&File=C:\data\Sample.wav&Out=SampleAnalysis.xml

This action performs audio analysis on the `Sample.wav` file and writes the results to the `SampleAnalysis.xml` file.

The `AudioAnalysis` task also produces an additional audio classification `.ctm` file. By default, this file has the same name as the task token. You can use the `GetResults` action with the `label` parameter set to `class` to retrieve this file.

For more information, see the IDOL Speech Server Reference.

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