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# ClusterSpeechTel

The `ClusterSpeechTel` task clusters telephony speech into speaker segments. For example, if two speaker clusters are identified, the output labels are `Cluster_0` and `Cluster_1` respectively.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Set to `ClusterSpeechTel`. | Yes
AppDnnBase | The location of the `appResources` directory, which contains the DNN and `.ian` files to use. |
AppFrameDupl | The balance between performance and speed for audio preprocessing DNN classification. |
AudioUpsampling | Whether to allow audio upsampling if the input audio has a sample rate too low for the task. |
EndTime | The end of an audio section to process. |
File | The input audio file. | Yes, if InputType is `File`.
FixTime | A fixed size for speaker clusters. |
InputType | The type of audio to process (file, binary data, or stream). |
Lang | The name of a language pack. | Yes
MaxNumSpeakers | The final maximum number of speakers to produce. |
MergeThresh | The threshold below which to merge clusters. |
MinNumSpeakers | The final minimum number of speakers to produce. |
Out | The file to write the results to. |
SilThresh | The threshold between what the task identifies as silence and non-silence. |
SpeechThresh | The threshold between speech and non-speech (music or noise). |
StartTime | The beginning of an audio section to process. |
SugdInputChannels | The channel layout of the input media file. This parameter does not apply when InputType is `Stream`. |
SugdInputFrequency | The sampling rate of the input media file. This parameter does not apply when InputType is `Stream`. |

## Example

    http://localhost:15000/action=AddTask&Type=ClusterSpeechTel&File=1h.wav&Lang=ENUK-tel&Out=outTel

This action clusters the data in the `1h.wav` telephony audio file into speaker segments, and writes the results to the `outTel` output file.

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