BS.1387

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Revision as of 10:15, 8 July 2005 by HotshotGG (talk | contribs) (added EAQUAL. Feel free to make any additions of corrections as we go along.)
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EAQUAL stands for Evaluation Of Audio Quality. It's an objective measurement technique used to measure the quality of encoded/decoded audio files. It acts in contrast to more the common place subjective testing methodology deployed using ABX and ABC/HR reference testing (frequently preferred by hydrogenaudio). It's part of the ITU-R recommendation BS.1387. Several tests have been performed using EAQUAL most notably using numerous AAC encoders to determine via a Pearson Correlation the linear relationship between human ratings and EAQUAL ratings. THe results however are still inconclusive.

Additional reading:

  • EAQUAL Sourcecode linux archive of c code used to implement EAQUAL provided by Gabrial Bouvigne.
  • EAQUAL Sourcode zip compression of archive of the utility used to perform EAQUAL tests provided by Rarewares.