Digital Audio Files

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Digital Audio Files

Digital audio is technology that can be used to record, store, generate, manipulate, and reproduce sound using audio signals encoded in digital form.[1]

History

Technical Details

Conservation Practices

Digital archivists [2] realized it was important to offer guidelines but offer individuals and institutions to interpret these guidelines for their collections. These guidelines are listed in 7 points:

  1. Digital technology is a given: the analog era has ended.
  2. Linear pulse code modulation is a given; digital audio files should be transparent, i.e., audibly indistinguishable from the original.
  3. Preservation transfers must be flat, that is, without any imposed equalization of the frequency range or use of restoration techniques to mitigate defects or limitations in the recording.
  4. Digital audio preservation files must be produced at high sampling and bit rates, and be uncompressed.
  5. Storage must be planned for the long term.
  6. Rich metadata must accompany preservation files.
  7. Professionalism is an essential component of audio preservation.

Conservation Products & Supplies

Equipment

References

  1. [1] Wikipedia
  2. [2]The State of Recorded Sound Preservation in the United States: A National Legacy at Risk in the Digital Age August 2010. PDF.