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Reference guides are available for functions and commands supported by OML, Tcl, and Python.
Reference Guide for OpenMatrix Language Functions
The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
Audio Commands
audioinfo
Gets information about the given audio file using functions defined in the Audio library.

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  The Reference Guide contains documentation for all functions supported in the OpenMatrix language.
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  - Audio Commands
    - audioformats
      Gets information about supported audio formats using functions defined in the Audio library.
    - audioinfo
      Gets information about the given audio file using functions defined in the Audio library.
    - audioread
      Gets audio data and the sampling rate from an audio file using functions defined in the Audio library.
    - audiowrite
      Writes audio data to an audio file using functions defined in the Audio library. Currently only .wav format files in PCM audio format are supported.
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audioinfo

Gets information about the given audio file using functions defined in the Audio library.

Syntax

R = audio(filename)

Inputs

filename: Audio file name. Currently, only .wav format files are supported.; Type: string

Outputs

R

Struct containing information about the given audio file filename. R contains the following fields:

Album:: Name of the album, if available.
Artist:: Name of the artist, if available.
AudioFormat:: Audio format type. Values can be 1-PCM, 3-IEEE float, etc.
BitRate:: Number of bits per sample.
ByteRate:: Bytes per second.
Comments:: Comments in the audio file, if available.
CompressionMethod:: Method of compression based on the audio format.
Copyright:: Copyright information if available.
CreationDate:: Date when the audio file was created, if available.
Duration:: Duration of the audio in seconds.
Filename:: Full path of the audio file filename.
Filesize:: Size of the audio file filename in bytes.
Genre:: Genre of the content, if available.
Keywords:: Keywords for the audio file filename, if available.
NumChannels:: Number of channels in the audio file filename. A value of 1 indicates mono and a value of 2 indicates stereo.
SampleFrameSize:: Sample frame size.
SampleRate:: Samples(blocks) per second
Software:: Software used to create the audio file, if available.
Source:: Source that supplied the original name of the audio file, if available.
Subject:: Subject, if available.
Title:: Title of the audio track.
TotalSamples:: Total number of samples in the audio file filename.
TrackNumber:: Track number, if available.

Type: struct

Example

Get information on an audio file:


R = audioinfo('audio2.wav')

R = struct [
  Album: www.mfiles.co.uk
  Artist: Ludwig van Beethoven
  AudioFormat: 1
  BitRate: 16
  ByteRate: 176400
  Comments: © Music Files Ltd
  CompressionMethod: PCM
  Copyright:
  CreationDate:
  Duration: 728.086077
  Filename: C:/audio/audio2.wav
  Filesize: 128434392
  Genre: Classical
  Keywords:
  NumChannels: 2
  SampleFrameSize: 4
  SampleRate: 44100
  Software: Lavf57.83.100
  Source:
  Subject:
  Title: Symphony No.6 (1st movement)
  TotalSamples: 32108544
  TrackNumber:
]