Jibe Audio Files

Voice recording ( Amethyst and iReCall )
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These are the supported formats of the recordings used in the JIBE solution.

.wav files: Linear PCM, 8000 Hz, 16-bit, mono
.al files: raw A-Law files, which don’t contain a header

Preferred format is alaw.

Converting the file in Audacity to 16 bit aLaw:

  • Open the recording.
  • Use the drop down menu on the top left of the wave form and select “Split to Mono”.
  • Now you can delete one of the wave forms, you only need one.
  • Use the Drop down menu again and select the “Format” and select “16 bit PCM”.
  • Click the “Tracks” and select “Resample” and select 8000.
  • Set Project Rate (Hz) to 8000
  • Now Select File and “Export Audio”.
  • Select “Other Uncompressed files” as the type.
  • Click the “Options…” button and select Header as “RAW (header-less)” and Encoding as “A-Law”.
  • Click ok.
  • Change the file extension to “.al” and save.

Converting the file to 16 bit mono wave in Audacity:

  • Open the recording.
  • Use the drop down menu on the top left of the wave form and select “Split to Mono”.
  • Now you can delete one of the wave forms, you only need one.
  • Use the Drop down menu again and select the “Set Sample Rate” and select “16 bit PCM”.
  • Click the “Tracks” and select “Resample” and select 8000.
  • Now Select File and “Export Audio”.

To open the .al files in audacity again

  • Select “File” → "Import " → “Raw Data”
  • Select the file you need to import.
  • Select the following settings:
    Encoding : A-Law
    Byte Order : Default endianness
    Channels : 1 channel ( mono)
    Start offset : 0
    Amount to import : 100%
    Sample Rate : 8000