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Researchers from Cambridge University and Meta Reality Labs analyzed human visual perception using a Pixel Per Degree (PPD) metric.
Black-and-white images were distinguishable at 94 PPD, while red-green patterns scored 89 PPD, and yellow-purple images were less perceptible at 53 PPD.
Study findings revealed no discernible difference between 1440p and 8K resolutions on a 50-inch display from a three-meter distance.
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* Queen will release a 5CD+2LP super deluxe Queen II box set on 27 March 2026 via EMI, expanding the original 1974 album extensively.

* Audio Research I/55 is a compact tube integrated amplifier derived from I/70, succeeding I/50, targeting high-end listeners seeking classic tube sound with m…

* ToxFreeLife tested 81 headphone models from brands including Sony, Apple, JBL, Bose, Samsung, and Temu across European retail and online marketplaces.

* Audio-Technica launches the ATH-CKD7NC USB-C wired earphones on February 27, featuring hybrid noise cancelling and priced at ¥9,680 via direct sales.