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Despite the superior technological features of high-resolution audio in comparison to compact discs and digital versatile discs, it's unclear if and how high-resolution audio leads to an enhanced subjective listening experience. The sound quality of traditional digital formats has been diluted by temporal blur, which is caused by a high-cut filter that is used to prevent aliasing of a digital sound source, resulting in spurious artificial sound energy before and after the initial sound source is introduced. This research investigated the effects of filter-induced temporal blur on the auditory neural pathway from the cochlea to the rostral brainstem by recording participants's auditory brainstem responses using high-resolution audio quality. These results indicate that a CD-level anti-alias filter does not influence initial auditory processing, and the sound difference is not discernible, at least for artificial sounds with a simple acoustic structure.
Source link: https://doi.org/10.1016/j.neulet.2021.136254
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