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# WavToPlh

The `WavToPlh` task creates an audio feature (.plh) file from an audio file. The AmTrain task uses audio feature files when adapting acoustic models.

## Parameters

Parameter | Description | Required
--- | --- | ---
Type | The task name. Set to `WavToPlh`. | Yes
File | The audio file to process. | Yes
NormFile | The acoustic normalization file (.ian file in the language pack) to use. | Yes
Out | The feature file to create. | Yes
Sfreq | The sample frequency of the audio file to process. | Only if the frequency of the audio file is not 16,000 Hz
SugdInputChannels | The channel layout of the input media file. |
SugdInputFrequency | The sampling rate of the input media file. |

## Example

    http://localhost:13000/action=AddTask&Type=WavToPlh&File=C:\myData\Speech.wav&NormFile=C:\SPKID\SPKID16k.ian&Out=Speech1.plh

This action uses port `13000` to instruct HPE IDOL Speech Server, which is located on the local machine, to produce the `Speech1.plh` file from the `Speech.wav` audio file, using the `SPKID16.ian` normalization file.

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