This paper describes experiments conducted to verify whether it is possible to discriminate the sound quality of 96-kHz sampled signals from their 48-kHz sampled counterparts, utilizing a digital audio tape recorder as a playback tool. The subjects were 11 adult males with normal hearing (aged 21 to 24). -Fusion- and popular music were used as test material. Experimental results employing the RXY method suggest that the subjects can be classified into three groups: significant (three subjects, 27.3%); likely to be significant (two subjects, 18.2%); and not significant (six subjects, 54.5%) in the case of the fusion-type music. They also suggest that the subjects were divided into two groups: significant (two subjects, 18.2%), and not significant (nine subjects, 81.8%), in the case of popular music. The results showed that there exists a significant group (two subjects, 18.2%) which is able to discriminate the difference of sound quality of both test materials, although the different classification of the subjects was obtained depending on the test materials. The results confirm that 96-kHz sampling will be effective for the high-quality digital audio of the future.
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