Does upsampling in digital audio actually improve DAC performance, or just make lower quality files look like high resolution audio?

Descending neurons that encode widefield motion vision in the fly have sexually dimorphic velocity tuning, while the wing beat amplitude, which these neurons presumably control, is monomorphic.

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Abstract: We experimentally demonstrate a high-speed terahertz (THz) equivalent-time sampling system operating in the 132 GHz band, and 30 Gbps QPSK communication signal is successfully captured, ...