We conducted subjective evaluation tests to study perceptual discrimination between musical sounds with and without very high frequency components (above 21 kHz). In order to conduct strict evaluation tests, the sound reproduction system used for these tests was designed to exclude any leakage or influence of very high frequency components in the audible frequency range. Most of the sound stimuli used for the evaluation tests were newly recorded by the authors to maintain the highest quality for proper sound reproduction. The subjects were selected mainly from professional audio experts and musicians. The results showed that we can still neither confirm nor deny the possibility that some subjects could discriminate between musical sounds with and without very high frequency components.
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