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# [afpfile] Module Configuration

The `afpfile` module both writes AFP features to file and reads audio fingerprinting files from file.

## Input and Output

The afpfile module has three modes of operation.

Mode | Input | Output | Description
--- | --- | --- | ---
`FINGERPRINT_READ` |  | `fp` | The name of the AFP feature file to read from.
`FINGERPRINT_WRITE` | `fp` |  | The name of the AFP feature file to write to.
`FINGERPRINT_WRITE` | `fp, w` |  | The AFP feature file in which to write AFP features filtered by the word labels received from the `w` stream.

Examples:

    fp <- afpfile(FINGERPRINT_READ, fp)

    output <- afpfile(FINGERPRINT_WRITE, fp)

    output <- afpfile(FINGERPRINT_WRITE, fp, w)

## Parameters

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