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Model results predicting AI-weighted signal-to-noise ratio (SNR) over the course of an orientation movement toward a signal at 120° past a noise at 60°. For omnidirectional microphones (gray dotted line), SNR remains similar as the head turns. By contrast, the use of directional microphones (solid black line) is predicted to be associated with large changes in SNR as a function of head angle. AI, Articulation Index.
