(octave.info)Data Retrieval

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33.4.2 Data Retrieval
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The following methods allow you to retrieve recorded audio data in
various ways.

 -- : DATA = getaudiodata (RECORDER)
 -- : DATA = getaudiodata (RECORDER, DATATYPE)
     Return recorder audio data as a matrix with values between -1.0 and
     1.0 and with as many columns as there are channels in the recorder.

     Given the optional argument DATATYPE, convert the recorded data to
     the specified type, which may be one of "double", "single",
     "int16", "int8" or "uint8".

 -- : PLAYER = getplayer (RECORDER)
     Return an audioplayer object with data recorded by the
     audiorecorder object RECORDER.

 -- : PLAYER = play (RECORDER)
 -- : PLAYER = play (RECORDER, START)
 -- : PLAYER = play (RECORDER, [START, END])
     Play the audio recorded in RECORDER and return a corresponding
     audioplayer object.

     If the optional argument START is provided, begin playing START
     seconds in to the recording.

     If the optional argument END is provided, stop playing at END
     seconds in the recording.