Bullseye
Headphoneus Supremus
- Joined
- Nov 25, 2008
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What does DBT stand for?
Originally Posted by Bullseye /img/forum/go_quote.gif What does DBT stand for? |
Originally Posted by Bullseye /img/forum/go_quote.gif What does DBT stand for? |
Originally Posted by nick_charles /img/forum/go_quote.gif Ivor Tiefenbrun please note ! |
Originally Posted by nick_charles /img/forum/go_quote.gif A DBT (Double Blind test) is a test where neither the experimenter nor the experimental subject know the identity of the object under test. |
Originally Posted by Pio2001 /img/forum/go_quote.gif Having the experimenter ignore it himself is a good way to acheive the double blind condition. |
Originally Posted by PhilS /img/forum/go_quote.gif |
Originally Posted by jcx /img/forum/go_quote.gif even automated ABX tester setups need careful vetting to determine if there are clues such as switching delay, relay cliks or noise level differences that allow descrimination of A from B channels independent of the actual tested variable |
Originally Posted by jcx /img/forum/go_quote.gif exactly - called the "clever Hans effect" Clever Hans - Wikipedia, the free encyclopedia humans are better than horses at interpreting clues about other people's expectations (at least human females) so the only way to avoid the problem is to arrange the test such that no one in the testing room, test administrator or subjects, has any clue to which instance of the test variable is presented during each trial afterwords the test scores are comapared with the master record of the test sequence even automated ABX tester setups need careful vetting to determine if there are clues such as switching delay, relay cliks or noise level differences that allow descrimination of A from B channels independent of the actual tested variable |
Originally Posted by milkweg /img/forum/go_quote.gif If it is required to be that meticulous then I feel pretty safe in saying that if there is any difference then it is so small that it is not worth spending big bucks for. If I was to spend 4G on an amp and already had an amp that cost 1G then I would expect a BIG difference for the 3G difference and not a minor one. |
Do all amps sound the same? |