ABX test
An ABX test is an acoustic test method , also known as a blind test , which can be used to determine whether a certain factor ( audio codec on the computer, loudspeaker cable, etc.) has an audible influence on the audio signal or not. The method and the name originally come from a publication by the Bell Laboratories in 1950.
The test person has access to three audio sources: A, B and X. X is chosen at random and corresponds to either A or B. The listener must decide whether X corresponds to source A or source B. This process is repeated several times. If the test person typed correctly in all or almost all cases and if the test was repeated often, then the probability that the guess was given is very low. One can then assume that the test person can really distinguish between the two sources.
There is freeware that can be used to perform ABX tests. This method is useful for testing audio codecs. For example, you can find out which bit rate of a codec is necessary so that you can no longer distinguish the lossy compressed audio file from an uncompressed variant.
Individual evidence
- ^ WA Munson, Mark Gardner: Standardizing Auditory Tests. Archived from the original on October 8, 2016. In: Acoustical Society of America 22, June 18, 1950 . August, p. 675. Retrieved October 8, 2016.
- ↑ ABX blind hearing test , accessed November 4, 2013.