Open topic with navigation

# [audiopreproc] Module Configuration

The `audiopreproc` module can perform several analysis operations on audio samples, covering audio quality as well as broad audio categorization.

## Input and Output

The `audiopreproc` module has five modes of operation. You can combine multiple modes into a single operation.

Mode | Input | Output | Description
--- | --- | --- | ---
`A` | `a` | `w` | Performs broad audio classification, breaking down the audio into segments of speech, silence, and non-speech/music.
`C` | `a` | `` | Reports overall percentages of clipping.
`S` | `a` | `` | Calculates the signal-to-noise ratio (SNR) over the entire file.
`S` | `a` | `w` | Calculates the signal-to-noise ratio (SNR) over the entire file as well as producing SNR estimates across broad categorized speech segments using mode `A`.
`T` | `a` | `d` | DTMF detection. Identifies tones corresponding to numbers 0-9, letters A-D, asterisk (*) and hash (#) keys.

Examples:

    w ← audiopreproc (A, a)

    output ← audiopreproc (S, a)

    w ← audiopreproc (ACS, a)

    d ← audiopreproc (T, a)

## Parameters

MaxSegSize | OutputLogLabel
MaxSilThresh | SampleFrequency
MinSegSize | SNRFile
MusicNoiseLab | SpeechLab
OutputLog | SpeechThreshOffset

© 2014 - 2016 Hewlett Packard Enterprise Development LP | Send documentation feedback to HPE Close We welcome your comments! To open the configured email client on this computer, open an email window. Otherwise, copy the information below to a web mail client, and send this email to AutonomyTPFeedback@hpe.com. Product: Topic Title: Help Topic: Feedback:

_HP_HTML5_bannerTitle.htm