Themis;353433 Wrote: > > What _really_ puzzles me, is that it didn't result to a counter-study > (originated from the AES or the ITU-V or anything), simply to show that > it was wrong. There was no attempt whatsoever to prove the contrary. > Funny... It's as if these organizations know some things that they > don't want to say. > At least this is the feeling I get. Maybe I'm wrong.
Actually, there was, though its only representation at AES is a convention abstract/presentation http://www.aes.org/e-lib/browse.cfm?elib=12375 a white paper version here: http://www.nhk.or.jp/strl/publica/labnote/lab486.html Their conclusions use admirably restrained scientific language: > Conclusions > > Thirty-six subjects evaluated 20 kinds of stimulus, and each > stimulus was evaluated 40 times in total. The results showed no > significant difference among the sound stimuli, but that the correct > response rate for three sound stimuli was close to the significance > probability (5% level). Furthermore, it showed that one subject > attained to a 75% correct response rate, which indicated a significant > difference. In order to confirm the reliability of this result, a > strict statistical supplementary test with this subject also was > conducted. This subject evaluated 20 times over six kinds of sound > stimulus. As a result, no significant difference was found among the > six sound stimuli. Therefore, it is concluded that this subject could > not discriminate between these sound stimuli with and without very high > frequency components. > > From above results, we can still neither confirm nor deny the > possibility that some subjects could discriminate between musical > sounds with and without very high frequency components. It is therefore > necessary to conduct further repetitive evaluation tests with many > subjects and various sound stimuli that contain sufficient very high > frequency components, in order to examine these issues more strictly. > > Nevertheless, the results also showed that the test system is > entirely reliable, and can exclude any leakage or distortion in the > audible frequency range caused by the very high frequency components. > Further evaluation tests using this test system will therefore > accurately show whether the very high frequency components in sound > stimuli affect human recognition of sound quality. -- krabapple ------------------------------------------------------------------------ krabapple's Profile: http://forums.slimdevices.com/member.php?userid=22334 View this thread: http://forums.slimdevices.com/showthread.php?t=54077 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
