Format for JIBE recordings

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Format for JIBE recordings

Postby Leon van Heerden » Tue Feb 23, 2016 8:29 am

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:
  1. Open the recording.
  2. Use the dropdownmenu on the top left of the wave form and select "Split to Mono".
  3. Now you can delete one of the wave forms, you only need one.
  4. Use the Drop down menu again and select the "Format" and select "16 bit PCM".
  5. Click the "Tracks" and select "Resample" and select 8000.
  6. Set Project Rate (Hz) to 8000
  7. Now Select File and "Export Audio".
  8. Select "Other Uncompressed files" as the type.
  9. Click the "Options..." button and select Header as "RAW (header-less)" and Encoding as "A-Law". Click ok.
  10. Change the file extension to ".al" and save.


Converting the file to 16 bit mono wave in Audacity:
  1. Open the recording.
  2. Use the dropdownmenu on the top left of the wave form and select "Split to Mono".
  3. Now you can delete one of the wave forms, you only need one.
  4. Use the Drop down menu again and select the "Set Sample Rate" and select "16 bit PCM".
  5. Click the "Tracks" and select "Resample" and select 8000.
  6. Now Select File and "Export Audio".
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Leon van Heerden
http://www.datatex.co.za
Leon van Heerden
 
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