Abstract
A number of experiments are described which investigate the effect of various display parameters on the visibility of signal lines using computer generated simulations of frequency-time-intensity displays. A signal detection theory analysis of the data was used to disambiguate the perceptual effect of a given display parameter from its effect on the display surface signal-to-noise ratio (SNR). It was found that changes in the luminance characteristics of the display (such as the number of grey levels and the type of grey scale) affected signal visibility, but only because of their effect on the SNR. On the other hand, two spatial display parameters (pixel width and display/signal height) had additional perceptual effects. The practical implications of the findings for display technology are discussed.
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