jj@rabbit.UUCP (08/13/84)
I've worked on a few experiments that were intended to compare subjective and objective results of audio signals. <Most of them either 3.2 or 6.5 kHz bandwidth, unfortunately.> In all of these tests, one factor has been significant: There exists no subjective measure (currently) that describes the perceived quality of an audio signal, other than at the worst/best level HOWEVER Given a rating of perceived quality, one CAN look at the particular signals and find the objective criteria that the subjects are making their decisions on, for most signals. In most tests with willing listeners, we have been able to discover the actual system differences that were causing the perceptive changes. We have NOT done any full bandwidth stereo testing to date, so I cannot say for sure that the same situation exists, however it is my feeling that it does. <More variables, certainly!> There are a few (mostly esoteric) references in print, I will mention one or two if there seems to be some interest, however, I fear that they do not greatly aid the stereophile or audiophile, because they refer only to small bandwidths. -- EVEN TEDDY BEARS LIKE COOKIES! " 'Darling, are you ready for the long winter's fall' ?" (allegra,harpo,ulysses)!rabbit!jj