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# [wav] Module Configuration

The `wav` module reads mono or stereo media data from file, and can pass the data to other modules for further processing.

## Input and Output

Mode | Input | Output | Description
--- | --- | --- | ---
`MONO` |  | `a` | Reads a mono media file.
`STEREO` |  | `l`, `r` | Reads a stereo media file.
`MONO_WRITE` | `a` |  | Writes a mono media file.
`MONO_DATA` |  | `a` | Reads in mono audio as a binary data block.
`STEREO_DATA` |  | `l`, `r` | Reads in stereo audio as a binary data block.

Examples:

    a <- wav(_, input)

    l, r <- wav(_, input)

## Parameters

EndTime | SugdInputChannels
SampleFrequency | SugdInputFrequency
StartTime | WavFile*

*You must set the value of this configuration parameter by setting the corresponding action parameter.

Note: If you do not set the `File` parameter, but you have submitted some binary audio data (POST/Multipart), then the server uses the binary data block as the audio data source. If there is no task data available and you have not set the `File` parameter, then the server returns an error.

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