BS.1387: Difference between revisions
(added EAQUAL. Feel free to make any additions of corrections as we go along.) |
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* [http://www.mp3-tech.org/programmer/sources/eaqual.tgz EAQUAL Sourcecode] linux archive of c code used to implement EAQUAL provided by Gabrial Bouvigne. | * [http://www.mp3-tech.org/programmer/sources/eaqual.tgz EAQUAL Sourcecode] linux archive of c code used to implement EAQUAL provided by Gabrial Bouvigne. | ||
* [http://www.rarewares.org/others.html EAQUAL | * [http://www.rarewares.org/others.html EAQUAL Tools] zip compression archive of the utility used to perform EAQUAL tests provided by Rarewares. | ||
Revision as of 10:16, 8 July 2005
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 Tools zip compression archive of the utility used to perform EAQUAL tests provided by Rarewares.